Mount Arayat
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Mount Arayat is a potentially active
stratovolcano A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and peri ...
located in the province of
Pampanga Pampanga, officially the Province of Pampanga ( pam, Lalawigan ning Pampanga; tl, Lalawigan ng Pampanga ), is a province in the Central Luzon region of the Philippines. Lying on the northern shore of Manila Bay, Pampanga is bordered by Tarlac ...
on the island of Luzon,
Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...
, rising to a height of . The volcano has a breached crater on its northwest side with a smaller
andesitic Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predomin ...
dome in the collapse amphitheater. There are no historical records of eruption in Arayat and the only dated rocks are 530- and 650-thousand-year-old
basalt Basalt (; ) is an 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 surface of a rocky planet or moon. More than 90 ...
s predating the collapse and formation of the
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 ...
. An analysis report indicates that the
volcano 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 ...
erupted over the last 2,000 years, but it is believed to refer to the
volcanic activity Volcanism, vulcanism or volcanicity is the phenomenon of eruption of molten rock (magma) onto the surface of the Earth or a solid-surface planet or moon, where lava, pyroclastics, and volcanic gases erupt through a break in the surface called a ...
of the volcano. The Mount Arayat National Park was established in 1933. Mount Arayat is located in a flat agricultural region at . The southern half of the mountain lies within the municipality of
Arayat, Pampanga Arayat, officially the Municipality of Arayat ( pam, Balen ning Arayat; tl, Bayan ng Arayat), is a 1st class municipality in the province of Pampanga in the Philippines. According to the 2020 census, it has a population of 144,875 people. Geogr ...
, while the north half and the mountain summit lies within
Magalang, Pampanga Magalang, officially the Municipality of Magalang ( pam, Balen ning Magalang; tl, Bayan ng Magalang), is a 1st class municipality in the province of Pampanga, Philippines. According to the 2020 census, it has a population of 124,188 people. Mag ...
. to the west of Mount Arayat is
Angeles City , anthem = Himno ning Angeles (Angeles Hymn) , subdivision_type3 = District , subdivision_name3 = , established_title = Settled , established_date = 1796 , established_title1 = Chartere ...
and the former
Clark Air Base Clark Air Base is a Philippine Air Force base on Luzon Island in the Philippines, located west of Angeles City, about northwest of Metro Manila. Clark Air Base was previously a United States military facility, operated by the U.S. Air F ...
. The active volcano
Mount Pinatubo Mount Pinatubo is an active stratovolcano in the Zambales Mountains, located on the tripoint boundary of the Philippine provinces of Zambales, Tarlac and Pampanga, all in Central Luzon on the northern island of Luzon. Its eruptive histor ...
is located west. The capital is
Manila Manila ( , ; fil, Maynila, ), officially the City of Manila ( fil, Lungsod ng Maynila, ), is the capital of the Philippines, and its second-most populous city. It is highly urbanized and, as of 2019, was the world's most densely populated ...
located south. The volcano was officially declared as a tourist spot on 1997. The mountain is mystical, the legendary home of Aung/Aring Sinukuan/Sinkuan/Suku or the Fairy known as diwata Maria Sinukuan depending on which version of the story the readers or listeners prefer, but in ancient Kapampangan folklore as well as the research gathered by Kapampangan students of
Henry Otley Beyer Henry Otley Beyer (July 13, 1883 – December 31, 1966) was an American anthropologist, who spent most of his adult life in the Philippines teaching Philippine indigenous culture. A.V.H. Hartendorp called Beyer the "Dean of Philippine ethnolog ...
, it was and is the abode of Apung/Aring Sinukuan, rival of Namalyari of
Mount Pinatubo Mount Pinatubo is an active stratovolcano in the Zambales Mountains, located on the tripoint boundary of the Philippine provinces of Zambales, Tarlac and Pampanga, all in Central Luzon on the northern island of Luzon. Its eruptive histor ...
, who is in varying versions, the son of Cargon-Cargon who was mortally wounded in a fight with a giant from the Zambales Mountain Range which is said to be the home of Apu Namalyari. The mountain is currently under an immense deforestation threat. Locals have cited that there is a man in the mountain, angry due to the deforestation that was happening. Others say that it was Aring Sinukuan.


Etymology

The first mention of the origin of Arayat is a travel diary from 1696 by Gemelli Careri. The author mentions that according to the natives, the original name of the mountain is ''Bondo Kalaya'', which later became ''Bondoc Alaya'' (literally "Mount Alaya"). Later on, Alaya became Arayat.


History


Philippine Revolution

During the Philippine Revolution, the Filipino revolutionaries retreated on Mount Arayat after the failure of the Cry of Nueva Ecija during September 1896 when the Spanish counter-attacked at San Isidro. In September 1897, Gen. Francisco Macabulos retreated to Mount Arayat along with his men to avoid capture by the Spanish authorities in Tarlac, which used to be under the control of his forces. Several engagements would occur here afterwards until his surrender on January 15, 1898.


World War II

On Mount Arayat, Colonel Thorpe, an American guerrilla officer, was captured by Japanese forces on December 10, 1942. Mount Arayat would then be used as a hiding place for communist Filipino guerrillas called the Hukbalahap afterwards.


Geography

Mount Arayat stands in the middle of the flat Central Luzon Plain, consisting of
rice paddies A paddy field is a flooded field of arable land used for growing semiaquatic crops, most notably rice and taro. It originates from the Neolithic rice-farming cultures of the Yangtze River basin in southern China, associated with pre-Au ...
and a typical elevation of about 15 to 35 metres MSL. The mountain is topped by a circular
volcanic crater A volcanic crater is an approximately circular depression in the ground caused by volcanic activity. It is typically a bowl-shaped feature containing one or more vents. During volcanic eruptions, molten magma and volcanic gases rise from an und ...
about in diameter, much of which has collapsed on the western and part of the northern rim due to erosion. This has resulted in a breached crater which opens in a west-northwest direction. This area is the apparent source of a major debris-avalanche deposit that forms hummocky terrain beyond the west and northwest sides of the volcano. The summit stands on the northeast side of the breached crater, known as North Peak, while the Pinnacle Peak is located on the southeast crater rim. Post-collapse activity formed an
andesitic Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predomin ...
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 ...
known as White Rock in the collapse amphitheater.


Eruptions

There are no cultural records of historical eruptions. However, weak steaming is currently present in some of the heavily eroded vents on the North Western side of the summit. The ancient eruptions were said to have caused the formation of a Lava Dome on the Western Slopes of the mountain known as White Rock which makes a nice tourist destination and is usually a field trip destination for students of Pampanga State Agricultural University. The Arayat amphitheatre is said to have been caused by the summit's collapse on the western side but a much deeper crater is present on the eastern side, it was said that the mountain was once a volcanic island, until eruptions covered the surrounding area with soil, eruptions were said to be the possible cause of a theorized re-route of
Pampanga River The Pampanga River is the second largest river on the island of Luzon in the Philippines (next to Cagayan River) and the country's fifth longest river. It is in the Central Luzon region and traverses the provinces of Pampanga, Bulacan, and Nueva ...
which is said to have once passed on the western side rather than eastern side where it currently moves.


Geology

Rock types are
basalt Basalt (; ) is an 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 surface of a rocky planet or moon. More than 90 ...
and
andesite Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predo ...
. The only rocks reported to have been dated are 0.53 and 0.65 million-year-old basalts. These predate the crater collapse and formation of the lava dome known as White Rock, which could have occurred in the last 2000 years. The mountain which is believed to be several peaks merged at the top by some local people is actually a Single-Cone
Stratovolcano A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and peri ...
.


Hiking activity

Two trails lead to the peaks of Mount Arayat. Mount Arayat National Park Located at San Juan Baño in
Arayat, Pampanga Arayat, officially the Municipality of Arayat ( pam, Balen ning Arayat; tl, Bayan ng Arayat), is a 1st class municipality in the province of Pampanga in the Philippines. According to the 2020 census, it has a population of 144,875 people. Geogr ...
has a trail to the southern Peak, taking around 3–4 hours to reach the peak. The Southern Peak offers views of Central Luzon, including a view of
Pampanga River The Pampanga River is the second largest river on the island of Luzon in the Philippines (next to Cagayan River) and the country's fifth longest river. It is in the Central Luzon region and traverses the provinces of Pampanga, Bulacan, and Nueva ...
. The collapsed western Slope that forms the other half of its caldera-like crater can also be seen. It offers a view of the mountains of
Zambales Zambales, officially the Province of Zambales ( fil, Lalawigan ng Zambales; ilo, Probinsia ti Zambales; Pangasinan: ''Luyag/Probinsia na Zambales''; xsb, Probinsya nin Zambales), is a province in the Philippines located in the Central Luzon re ...
and
Bataan Bataan (), officially the Province of Bataan ( fil, Lalawigan ng Bataan ), is a province in the Central Luzon region of the Philippines. Its capital is the city of Balanga while Mariveles is the largest town in the province. Occupying the enti ...
(to the west), and the mountains of the Sierra Madre range (to the east). The northern or higher Peak can be accessed on a route from Pampanga State Agricultural University in
Magalang, Pampanga Magalang, officially the Municipality of Magalang ( pam, Balen ning Magalang; tl, Bayan ng Magalang), is a 1st class municipality in the province of Pampanga, Philippines. According to the 2020 census, it has a population of 124,188 people. Mag ...
, taking a similar time to reach the peak, however, this route takes you through the Arayat Amphitheatre and the so-called White Rock which legend claims to be the Home of Apung/Aring Sinukuan. There are two other trails on Mount Arayat's slopes as of 2017: the Pinnacle, which is a knife edge monkey trail, and the TKO, which is the hardest trail. The trails in San Juan Banyo, Arayat Pampanga. However, these two features, the Pinnacle and TKO, cannot be considered peaks because they are not prominent unlike the North and South peak, and thus are only considered as view decks as per International Mountaineering definitions.


Arayat in Folklore

The Mountain is said to be the home of the god/sorcerer named Sinukuan/Sinukwan or Sucu, which could mean "The end" or "he to whom others have surrendered." The mountain was said to have been located in the swamp to its south but relocated because of the evil ways of those who lived there, in addition to which, the people of the swamp were made to suffer numerous misfortunes. Sinukuan is believed to be able to transform and do as he pleases at will, his only real rival being Namalyari of
Mount Pinatubo Mount Pinatubo is an active stratovolcano in the Zambales Mountains, located on the tripoint boundary of the Philippine provinces of Zambales, Tarlac and Pampanga, all in Central Luzon on the northern island of Luzon. Its eruptive histor ...
. The waterfalls at Ayala in
Magalang, Pampanga Magalang, officially the Municipality of Magalang ( pam, Balen ning Magalang; tl, Bayan ng Magalang), is a 1st class municipality in the province of Pampanga, Philippines. According to the 2020 census, it has a population of 124,188 people. Mag ...
is said to be his bathing quarters, and it is often visited by tourists and natives alike. Sinukuan is said to live at the White rock, a Lava dome possibly formed by the last eruption, where its glimmering properties were most likely to have inspired the legend. Contrary to reality, the mountain is believed to be several mountains merging at the center including the tallest two peaks. Sinukuan is believed to have daughters who come down only during time of grace and are disguised as humans, Sinukuan himself can be disguised as human. The day he comes back is believed to either be when he responds to the attack of Namalyari on Mount Pinatubo's 1991 eruption or when the time to call his servants upon the end of the world has come. Prior to Spanish colonization, Sinukuan was known as a powerful male Kapampangan god, named Aring Sinukûan, who was in par with the Kapampangan god of Pinatubo, Apûng Malyari. The two were the second most powerful deities in Kapampangan mythology, next only to Mangechay (sometimes called Mangacha), the great elder and creator goddess. Aring Sinukûan was the sun god of war and death, taught the early inhabitants the industry of metallurgy, wood cutting, rice culture and waging war. He had three children, namely, Munag Sumalâ, the golden serpent god who represent dawn, Lakandanup, the god of gluttony who represented the sun at noon time, and Gatpanapun, the noble god who only knew pleasure and represented the afternoon. He also had a winged assistant named Galurâ, a giant eagle deity believed to be the bringer of storms, and a wife named Mingan. However, when the Spanish arrived, they 'rebranded' Sinukuan as a woman, thinking that the people would not revere the deity if he was a female, not knowing that the great elder deity of the Kapampangan was a woman named Mangechay. Despite this, the natives continued to revere Sinukuan. Furious, the Spanish added 'Maria' to Sinukuan's name to somewhat turn her into Catholic in a bid to further subjugate the natives and convert them into Roman Catholicism. In recent years, locals have cited that there is a man in the mountain, angry due to the deforestation that was happening. Others say that it was Aring Sinukuan.


Listings

Fumarole A fumarole (or fumerole) is a vent in the surface of the Earth or other rocky planet from which hot volcanic gases and vapors are emitted, without any accompanying liquids or solids. Fumaroles are characteristic of the late stages of volcani ...
activity is reported on the NW side of the summit. The
Global Volcanism Program The Smithsonian Institution's Global Volcanism Program (GVP) documents Earth's volcanoes and their eruptive history over the past 10,000 years. The mission of the GVP is to document, understand, and disseminate information about global volcanic a ...
lists Mount Arayat as
Holocene The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene togeth ...
Philippine Institute of Volcanology and Seismology (PHIVOLCS), list Mount Arayat as Potentially active volcano.


Conservation efforts

In April 2022, President
Rodrigo Duterte Rodrigo Roa Duterte (, ; born March 28, 1945), also known as Digong, Rody, and by the initials DU30 and PRRD, is a Filipino lawyer and politician who served as the 16th president of the Philippines from 2016 to 2022. He is the chairperson ...
signed a law declaring Mount Arayat as a protected landscape under the
National Integrated Protected Areas System This is a list of protected areas of the Philippines administered by the Department of Environment and Natural Resources (DENR)'s Biodiversity Management Bureau under the National Integrated Protected Areas System (NIPAS) Act of 1992. As of 202 ...
.


See also

*
List of active volcanoes in the Philippines This is a list of active volcanoes in the Philippines, as categorized by the Philippine Institute of Volcanology and Seismology (PHIVOLCS). Volcanoes in the country have erupted within the last 600 years, with accounts of these eruptions documen ...
*
List of potentially active volcanoes in the Philippines This is a list of potentially active volcanoes in the Philippines, as classified by the Philippine Institute of Volcanology and Seismology. List See also * List of active volcanoes in the Philippines * List of inactive volcanoes in t ...
*
List of inactive volcanoes in the Philippines This is a list of inactive volcanoes in the Philippines. Volcanoes with no record of eruptions are considered as extinct or inactive. Their physical form since their last activity has been altered by agents of weathering and erosion with the ...
*
List of national parks of the Philippines National Parks of the Philippines ( fil, Pambansang Liwasan ng Pilipinas) are places of natural or historical value designated for protection and sustainable utilization by the Department of Environment and Natural Resources under the National Int ...
*
Pacific ring of fire The Ring of Fire (also known as the Pacific Ring of Fire, the Rim of Fire, the Girdle of Fire or the Circum-Pacific belt) is a region around much of the rim of the Pacific Ocean where many volcanic eruptions and earthquakes occur. The Ring ...
* Philippine Institute of Volcanology and Seismology


References


External links


Mt. Arayat/ Arayat Trail (1,030+)
on Pinoy Mountaineer {{authority control National parks of the Philippines Arayat, Mount Arayat, Mount Arayat, Mount Arayat, Mount Arayat, Mount Landforms of Pampanga Tourist attractions in Pampanga Arayat, Mount