
Ayo Rock Formations are monolithic rock
boulder
In geology, a boulder (or rarely bowlder) is a rock fragment with size greater than in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive.
In ...
s located on the island of
Aruba in the
Caribbean. They are located near Ayo village, about 3.2 km from the natural bridge towards Casibari.
Casibari Boulders are about 3.2 km inland between Natural Bridge (now defunct) and
Oranjestad, the capital of Aruba, west of Boca Andicuri.
History

The
Arawak people
The Arawak are a group of indigenous peoples
Indigenous peoples are culturally distinct ethnic groups whose members are directly descended from the earliest known inhabitants of a particular geographic region and, to some extent, maintain ...
were the earliest settlers on the island. They used to visit Ayo Rock Formations so that they could hear incoming thunderstorms closing in on the island of Aruba. They also carved paintings in rocks called
petroglyphs
A petroglyph is an image created by removing part of a rock surface by incising, picking, carving, or abrading, as a form of rock art. Outside North America, scholars often use terms such as "carving", "engraving", or other description ...
while performing religious rites.
Formations

One of the unusual and notable rock formations is the
Casibari Boulders, which are
tonalite
Tonalite is an igneous, plutonic ( intrusive) rock, of felsic composition, with phaneritic (coarse-grained) texture. Feldspar is present as plagioclase (typically oligoclase or andesine) with alkali feldspar making up less than 10% of the tota ...
rocks seen to the north of
Hooiberg
Hooiberg is a high volcanic formation on the island of Aruba. It is located almost in the center of the island and can be seen from virtually anywhere on the island.
The Dutch word ''hooiberg'', literally translates into ''haystack'' in Englis ...
. They are reddish brown in colour and rise above the desert landscape giving a panoramic view of the island. They are located amidst cacti, and lizards are commonly encountered here. The boulders have unusual shapes resembling birds and dragons. There is no plausible explanation yet for the presence of these unusual wind-carved boulder formations on a flat sandy island.
[ However, the geological formations seen on the island are of ]volcanic
A volcano is a rupture 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 often found where tectonic plates ...
origin in its eastern sector, and some areas which are of coral formation are ascribed to the sea which was at higher level. However, in the diorite
Diorite ( ) is an intrusive igneous rock formed by the slow cooling underground of magma (molten rock) that has a moderate content of silica and a relatively low content of alkali metals. It is intermediate in composition between low-sil ...
rock formation region, the Ayo Rock Formations are seen in a heap of monolithic boulders.
Walking trails
Walking trails and steps have been set around the formation. They pass through several narrow tunnel which make the access through a single line quite difficult. Casibari formations are approached 3.2 km from the Highway 4A/B. At the entrance, there is a formation named Dragon Mouth. On a clear day, the entire island and even Venezuela
Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in ...
coast line can be seen from the formations site.
References
External links
Ayo Rock Formations
– aruba.com
{{coord missing, Netherlands
Landforms of Aruba
Tourist attractions in Aruba
Rock formations