Pilot Butte is a cinder cone that was created from an

extinct volcano A volcano is commonly defined as a vent or fissure in the Crust (geology), crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and volcanic gas, gases to escape from a magma chamber below the surface. On Earth ...

located in Bend,

Oregon Oregon ( , ) is a U.S. state, state in the Pacific Northwest region of the United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...

. It is a

cinder cone A cinder cone or scoria cone is a steep, volcanic cone, conical landform of loose pyroclastic rock, pyroclastic fragments, such as volcanic ash, clinkers, or scoria that has been built around a volcanic vent. The pyroclastic fragments are forme ...

butte In geomorphology, a butte ( ) is an isolated hill with steep, often vertical sides and a small, relatively flat top; buttes are smaller landforms than mesas, plateaus, and table (landform), tablelands. The word ''butte'' comes from the French l ...

which rises nearly above the surrounding plains. Bend is one of six cities in the United States to have a

volcano A volcano is commonly defined as a vent or fissure in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most oft ...

within its boundaries. The other examples are

Mount Tabor Mount Tabor ( ; ; ), sometimes spelled Mount Thabor, is a large hill of biblical significance in Lower Galilee, Northern District (Israel), northern Israel, at the eastern end of the Jezreel Valley, west of the Sea of Galilee. In the Hebrew Bi ...

Portland, Oregon Portland ( ) is the List of cities in Oregon, most populous city in the U.S. state of Oregon, located in the Pacific Northwest region. Situated close to northwest Oregon at the confluence of the Willamette River, Willamette and Columbia River, ...

, Jackson Volcano in

Jackson, Mississippi Jackson is the List of capitals in the United States, capital and List of municipalities in Mississippi, most populous city of the U.S. state of Mississippi. The city sits on the Pearl River (Mississippi–Louisiana), Pearl River and is locate ...

, Diamond Head in

Honolulu Honolulu ( ; ) is the List of capitals in the United States, capital and most populous city of the U.S. state of Hawaii, located in the Pacific Ocean. It is the county seat of the Consolidated city-county, consolidated City and County of Honol ...

, Glassford Hill in Prescott Valley and Pilot Knob in

Austin, Texas Austin ( ) is the List of capitals in the United States, capital city of the U.S. state of Texas. It is the county seat and most populous city of Travis County, Texas, Travis County, with portions extending into Hays County, Texas, Hays and W ...

. The Pilot Butte State Scenic Viewpoint, presented as a gift to the State of Oregon in 1928, is a Bend icon. Pilot Butte itself is a popular hiking destination with two trails to the summit, each gaining about in elevation. There is also a trail around the base of the butte. A scenic road also winds up and around the cone. In 2018, the park was the most visited Oregon state park east of the

Cascade Mountains The Cascade Range or Cascades is a major mountain range of western North America, extending from southern British Columbia through Washington and Oregon to Northern California. It includes both non-volcanic mountains, such as many of those in the ...

. From the top, the entire city of Bend is visible, as well as several major Cascade peaks including Mount Bachelor,

Broken Top Broken Top is a glacially eroded complex stratovolcano. It lies in the Cascade Volcanic Arc, part of the extensive Cascade Range in the U.S. state of Oregon. Located southeast of the Three Sisters peaks, the volcano, residing within the Three ...

, and the Three Sisters, located about to the west. Bend launches

fireworks Fireworks are Explosive, low explosive Pyrotechnics, pyrotechnic devices used for aesthetic and entertainment purposes. They are most commonly used in fireworks displays (also called a fireworks show or pyrotechnics), combining a large numbe ...

from Pilot Butte every

Independence Day An independence day is an annual event memorialization, commemorating the anniversary of a nation's independence or Sovereign state, statehood, usually after ceasing to be a group or part of another nation or state, or after the end of a milit ...

Geography

Pilot Butte is situated on U.S. Route 20 in Bend,

Deschutes County, Oregon Deschutes County ( ) is one of the Oregon counties, 36 counties in the U.S. state of Oregon. As of the 2020 United States census, 2020 census, the population was 198,253. The county seat is Bend, Oregon, Bend. The county was created in 1916 out ...

. The volcano lies north of

Newberry Volcano Newberry Volcano is a large, active, shield-shaped stratovolcano located about south of Bend, Oregon, United States, east of the major crest of the Cascade Range, within the Newberry National Volcanic Monument. Its highest point is Paulina P ...

, east of the

Cascade Range The Cascade Range or Cascades is a major mountain range of western North America, extending from southern British Columbia through Washington (state), Washington and Oregon to Northern California. It includes both non-volcanic mountains, such as m ...

, and southwest of the

Ochoco Mountains The Ochoco Mountains are a mountain range in central Oregon in the United States, located at the western end of the Blue Mountains (Pacific Northwest), Blue Mountains. They were formed when Permian, Triassic, and Jurassic rocks were slowly uplif ...

. The

Geographic Names Information System The Geographic Names Information System (GNIS) is a database of name and location information about more than two million physical and cultural features, encompassing the United States and its territories; the Compact of Free Association, asso ...

database lists its summit elevation as ; the

National Geodetic Survey The National Geodetic Survey (NGS) is a List of federal agencies in the United States, United States federal agency based in Washington, D.C. that defines and manages a national geographic coordinate system, coordinate system, providing the fou ...

lists its elevation as .

Geology and eruptive history

Pilot Butte is a Pleistocene

volcano. It lies just outside the southeastern margin of the Crooked River caldera, which collapsed and formed

volcanic field A volcanic field is an area of Earth's Earth's crust, crust that is prone to localized volcano, volcanic activity. The type and number of volcanoes required to be called a "field" is not well-defined. Volcanic fields usually consist of clusters ...

s of

rhyolitic Rhyolite ( ) is the most silica-rich of volcanic rocks. It is generally glassy or fine-grained (aphanitic) in texture, but may be porphyritic, containing larger mineral crystals ( phenocrysts) in an otherwise fine-grained groundmass. The miner ...

lava flow Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a Natural satellite, moon onto its surface. Lava may be erupted at a volcano or through a Fissure vent, fractu ...

lava dome In volcanology, a lava dome is a circular, mound-shaped protrusion resulting from the slow extrusion of viscous lava from a volcano. Dome-building eruptions are common, particularly in convergent plate boundary settings. Around 6% of eruptions ...

s, and

dikes Dyke or dike may refer to: General uses * Dyke (slang), a slang word meaning "lesbian" * Dike (geology), formations of magma or sediment that cut through and across the layering of adjacent rocks * Dike (mythology), ''Dikē'', the Greek goddess ...

including Powell Buttes, Gray Butte, Grizzly Mountain, and Barnes Butte. During the late

Pleistocene The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fin ...

, eruptions at Newberry Volcano produced voluminous

basalt Basalt (; ) is an aphanite, aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the planetary surface, surface of a terrestrial ...

lava flows that extended into the area now occupied by Bend and Redmond. About 78,000 years ago, similar eruptive activity formed lava flows that surrounded Pilot Butte and filled the Deschutes riverbed, altering the course of the river by redirecting it to form a new channel to the west. The interior of these lava flows can be explored at

Lava River Cave The Lava River Cave near Bend, Oregon, is part of the Newberry National Volcanic Monument, which is managed by the United States Forest Service. At in length, the northwest section of the cave is the longest continuous lava tube in Oregon. Whi ...

. Pilot Butte erupted

basaltic andesite Basaltic andesite is a volcanic rock that is intermediate in composition between basalt and andesite. It is composed predominantly of augite and plagioclase. Basaltic andesite can be found in volcanoes around the world, including in Central Ameri ...

, which underlies other lava flows dating to the Quaternary near Bend. There are four major faults in the Bend area, which run from the northern side of Newberry Volcano to north of the point where Oregon Highway 20 and 97 meet. These faults have produced vertical surface separation of up to in their southern components, including

displacement Displacement may refer to: Physical sciences Mathematics and physics *Displacement (geometry), is the difference between the final and initial position of a point trajectory (for instance, the center of mass of a moving object). The actual path ...

of northeast of Pilot Butte. One of the four is a normal fault that runs for in length with an average strike of 26° trending north–west, one of its endpoints approximately southeast of Pilot Butte. Deposits on Pilot Butte's northeastern side exhibit variable degrees of displacement, implying several distinct surface ruptures, and lava deposited by Pilot Butte has an

escarpment An escarpment is a steep slope or long cliff that forms as a result of faulting or erosion and separates two relatively level areas having different elevations. Due to the similarity, the term '' scarp'' may mistakenly be incorrectly used inte ...

of more than . Pleistocene activity produced highly

porphyritic Porphyritic is an adjective used in geology to describe igneous rocks with a distinct difference in the size of mineral crystals, with the larger crystals known as phenocrysts. Both extrusive and intrusive rocks can be porphyritic, meaning ...

lava with 10 to 15 percent

plagioclase Plagioclase ( ) is a series of Silicate minerals#Tectosilicates, tectosilicate (framework silicate) minerals within the feldspar group. Rather than referring to a particular mineral with a specific chemical composition, plagioclase is a continu ...

phenocryst image:montblanc granite phenocrysts.JPG, 300px, Granites often have large feldspar, feldspathic phenocrysts. This granite, from the Switzerland, Swiss side of the Mont Blanc massif, has large white phenocrysts of plagioclase (that have trapezoid sh ...

s reaching diameters of up to . The lava is composed of 53.5 percent

silica Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula , commonly found in nature as quartz. In many parts of the world, silica is the major constituent of sand. Silica is one of the most complex and abundant f ...

and 20 percent

aluminum oxide Aluminium oxide (or aluminium(III) oxide) is a chemical compound of aluminium and oxygen with the chemical formula . It is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium oxide. It is commonly ...

. The volcano's lower southwest flank is covered with white, rhyolitic

tephra Tephra is fragmental material produced by a Volcano, volcanic eruption regardless of composition, fragment size, or emplacement mechanism. Volcanologists also refer to airborne fragments as pyroclasts. Once clasts have fallen to the ground, ...

, which is similar in composition to tephra found at Tumalo Creek; Sherrod et al. (2004) attribute the Tumalo Creek pumice to Pilot Butte. The pumice deposit at Tumalo Creek has a thickness of at least with

lapilli Lapilli (: lapillus) is a size classification of tephra, which is material that falls out of the air during a volcanic eruption or during some meteorite impacts. ''Lapilli'' is Latin for "little stones". By definition lapilli range from in dia ...

reaching up to in length. White lapilli have phenocrysts of plagioclase and

clinopyroxene The pyroxenes (commonly abbreviated Px) are a group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks. Pyroxenes have the general formula , where X represents ions of calcium (Ca), sodium (Na), iron (Fe ...

ranging from . Darker lapilli are mostly aphyric (lacking phenocrysts). Pilot Butte is

extinct Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and ...

. Its exact age is unknown, though one study dated the volcano to about 188,000 ± 42,000 years ago. The volcanic rock has normal

magnetic polarity A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, steel, nickel, c ...

, suggesting that it was laid down after the most recent geomagnetic reversal about 780,000 years ago. The butte's light-colored soil contains some ash from the eruption of

Mount Mazama Mount Mazama ( Klamath: ''Tum-sum-ne'') is a complex volcano in the western U.S. state of Oregon, in a segment of the Cascade Volcanic Arc and Cascade Range. The volcano is in Klamath County, in the southern Cascades, north of the Oregon– ...

(which formed

Crater Lake Crater Lake ( Klamath: ) is a volcanic crater lake in south-central Oregon in the Western United States. It is the main feature of Crater Lake National Park and is a tourist attraction for its deep blue color and water clarity. T ...

Ecology

The most common tree on Pilot Butte is Western juniper, which is sometimes parasitized by witches' broom

mistletoe Mistletoe is the common name for obligate parasite, obligate parasitic plant, hemiparasitic plants in the Order (biology), order Santalales. They are attached to their host tree or shrub by a structure called the haustorium, through which they ...

. Also abundant are

sagebrush Sagebrush is the common name of several woody and herbaceous species of plants in the genus ''Artemisia (plant), Artemisia''. The best-known sagebrush is the shrub ''Artemisia tridentata''. Sagebrush is native to the western half of North Amer ...

and the similar plants bitterbrush and rabbitbrush. The

invasive species An invasive species is an introduced species that harms its new environment. Invasive species adversely affect habitats and bioregions, causing ecological, environmental, and/or economic damage. The term can also be used for native spec ...

cheatgrass is likely the most common grass on the butte. Wildflowers that appear include sand lily,

rock cress Rockcress is a common name used for several similar genera of flowering plants in the family Brassicaceae: *''Arabis'', with primarily Old World species *''Arabidopsis'', with primarily European species *''Boechera'', with primarily North American ...

penstemon ''Penstemon'' , the beardtongues, is a large genus of roughly 280 species of flowering plants native to North America from northern Canada to Central America. It is the largest genus of flowering plants endemic to North America. As well as bein ...

paintbrush A paintbrush is a brush used to apply paint or ink. A paintbrush is usually made by clamping bristles to a handle with a ferrule. They are available in various sizes, shapes, and materials. Thicker ones are used for filling in, and thinner ones ...

buckwheat Buckwheat (''Fagopyrum esculentum'') or common buckwheat is a flowering plant in the knotweed family Polygonaceae cultivated for its grain-like seeds and as a cover crop. Buckwheat originated around the 6th millennium BCE in the region of what ...

yarrow ''Achillea millefolium'', commonly known as yarrow () or common yarrow, is a flowering plant in the family Asteraceae. Growing to tall, it is characterized by small whitish flowers, a tall stem of fernlike leaves, and a pungent odor. The plan ...

, blazing star, mariposa lily, lupine, and monkeyflower.

Ponderosa pine ''Pinus ponderosa'', commonly known as the ponderosa pine, bull pine, blackjack pine, western yellow-pine, or filipinus pine, is a very large pine tree species of variable habitat native to mountainous regions of western North America. It is t ...

and red currant can also be found. Birds and deer feed on some of the plants, and some animals use

snags In forest ecology, a snag is a standing dead or dying tree, often missing a top or most of the smaller branches. In freshwater ecology the term ''snag'' refers to trees, branches, and other pieces of naturally occurring wood found sunken in riv ...

as shelter.

History

Pilot Butte has been a

landmark A landmark is a recognizable natural or artificial feature used for navigation, a feature that stands out from its near environment and is often visible from long distances. In modern-day use, the term can also be applied to smaller structures ...

in the Bend area for many years, including for the Farewell Bend Park campground for travelers crossing the

Deschutes River The Deschutes River ( ) in central Oregon is a major tributary of the Columbia River. The river provides much of the drainage on the eastern side of the Cascade Range in Oregon, gathering many of the tributaries that descend from the drier, easte ...

. It was also historically known as Red Butte, though this name is no longer used. The property encompassing the lava dome and its summit park were donated to the state of Oregon by F. R. Welles, Kempster B. Miller, and Charles A. Brown in memory of their business associate Terrence Hardinton Foley in September of 1928. Foley was the leader of the local Elks lodge until his death in a 1926 automobile accident, and the summit park has a memorial tablet dedicated to him. Pilot Butte was named in 1851 by Thomas Clark, leader of the first party of European settlers to camp on the future site of Bend. The Clark wagon train approached the area from the east after recovering from the Clark massacre. In 1932, a

station was placed at the top of the volcano. By 1971 this was at the center of a

traffic circle A roundabout, a rotary and a traffic circle are types of circular intersection or junction in which road traffic is permitted to flow in one direction around a central island, and priority is typically given to traffic already in the junct ...

atop the butte. In 1984, the butte was near Bend's eastern edge. Pilot Butte Drive-In

In 1983, a

drive-in A drive-in is a facility (such as a restaurant or Drive-in theater, movie theater) where one can driving, drive in with an automobile for service. At a drive-in restaurant, for example, customers park their vehicles and are usually served by ...

hamburger restaurant called Pilot Butte Drive-In was opened next to the butte on Greenwood Avenue. It remained open until 2020, when it was closed in response to

COVID-19 lockdowns During the early stages of the COVID-19 pandemic, a number of Non-pharmaceutical intervention (epidemiology), non-pharmaceutical interventions, particularly lockdowns (encompassing stay-at-home orders, curfews, quarantines, and similar socie ...

. The property was sold and later reopened as a pizza, beer, and poker establishment, known as the Pilot Butte Taproom or the Bend Poker Room.

Recreation

A winding paved road spirals to the top of the summit, which is accessible by car during daylight hours but is closed in winter. Several hiking trails traverse the volcano, all reaching the summit. Other volcanoes in the Cascades can be seen from Pilot Butte's summit, including (seen from left to right) Mount Bachelor,

, the Three Sisters,

Mount Washington Mount Washington is an ultra-prominent mountain in the state of New Hampshire. It is the highest peak in the Northeastern United States at and the most topographically prominent mountain east of the Mississippi River. The mountain is notorio ...

Three Fingered Jack Three Fingered Jack is a summit of a shield volcano of the Cascade Range in the U.S. state of Oregon. Formed during the Pleistocene epoch, the mountain consists mainly of basaltic andesite lava and was heavily glaciated in the past. While ot ...

, Mount Jefferson, Black Butte, and

Mount Hood Mount Hood, also known as Wy'east, is an active stratovolcano in the Cascade Range and is a member of the Cascade Volcanic Arc. It was formed by a subduction zone on the West Coast of the United States, Pacific Coast and rests in the Pacific N ...

. In 2010, a trail was constructed around the base of the butte. Pilot Butte State Scenic Viewpoint includes more than of trails on the volcano. The park had 949,968 annual visits in 2018, making it the most visited Oregon state park east of the Cascade Mountains and the ninth most popular in the state. Bend launches

from the butte every

, commonly sparking small fires in the butte's vicinity.

References

Sources

* * * * * *

External links

* * *
Pilot Butte State Scenic Viewpoint
from

The Oregon Encyclopedia ''The Oregon Encyclopedia of History and Culture'' is a collaborative encyclopedia focused on the history and culture of the U.S. state of Oregon. Description The encyclopedia is a project of Portland State University's History Department, the O ...

{{authority control 1928 establishments in Oregon Bend, Oregon Buttes of Oregon Cascade Range Cascade Volcanoes Cinder cones of the United States Extinct volcanoes of the United States Mountains of Deschutes County, Oregon Mountains of Oregon Municipal parks in Oregon Parks in Deschutes County, Oregon Pleistocene cinder cones State parks of Oregon Tourist attractions in Bend, Oregon Volcanoes of Deschutes County, Oregon Volcanoes of Oregon de:Pilot Butte State Scenic Viewpoint