Mountains & Volcanoes

12 min read

Monfort Bat Sanctuary: Ecology, Conservation and Tourism on Samal Island

Monfort Bat Sanctuary on Samal Island hosts 2.3 million Rousette fruit bats, recognized by Guinness World Records as the largest single colo...

13 min read

Bangan Hill National Park: Heritage and Landscape in Bayombong

Bangan Hill National Park in Bayombong, Nueva Vizcaya, a historic site of the 1739 first mass and scenic hiking destination.

14 min read

Huluga Caves: Archaeology and Geology in Cagayan de Oro

Prehistoric cave complex in Cagayan de Oro with artifacts dated to 377 A.D.

15 min read

Guadalupe Mabugnao Mainit Hot Spring National Park: Geography, Recreation and Conservation

Protected area in Carcar, Cebu featuring hot springs, caves and a watershed reserve established in 1972.

12 min read

Hundred Islands National Park: Geology, History and Conservation in Pangasinan

The first national park in the Philippines, located in Alaminos, Pangasinan, featuring 124 limestone islands in Lingayen Gulf.

13 min read

Aurora Memorial National Park: Geography, History and Conservation

Protected area in the Sierra Madre mountains of Central Luzon, established in 1937 and dedicated to First Lady Aurora Aragon Quezon.

12 min read

Tabon Caves: Archaeology, History and Conservation in Palawan

Tabon Caves in Palawan is the Philippines' cradle of civilization, featuring Tabon Man and UNESCO tentative status.

14 min read

Lake Butig National Park: Geography, Ecology and Conservation in Lanao del Sur

Lake Butig National Park is a 68-hectare protected area in Butig, Lanao del Sur, established in 1965.

12 min read

Cassamata Hill National Park: Geography, Recreation and Heritage in Bangued

Cassamata Hill National Park in Bangued, Abra is a 57-hectare protected area offering views of Mount Banti Goolong and the Abra River valley...

14 min read

National Geological Monuments of the Philippines: Designation, Sites and Conservation

Overview of the Philippines' National Geological Monuments, their legal basis, designated sites, and conservation challenges.

13 min read

Lucsuhin Natural Bridge: Geology, Discovery and Conservation in Cavite

Lucsuhin Natural Bridge in Silang, Cavite, is the first large natural bridge reported in the Philippines, discovered in 1910.

16 min read

Hinagdanan Cave: Geology, Discovery and Conservation in Bohol

Hinagdanan Cave in Dauis, Bohol, is a limestone cavern with a sunlit lagoon, discovered when a stone was thrown into a hillside hole.

9 min read

Guyangan Cave System: Archaeology and Heritage in Banton, Romblon

Archaeological site in Banton, Romblon, featuring the oldest known ikat textile in Southeast Asia.

12 min read

Casecnan Protected Landscape: Geography, Hydroelectric Development and Conservation

Protected area in Nueva Vizcaya, Quirino and Aurora protecting the Casecnan River watershed and supporting hydroelectric power generation.

12 min read

Sierra Madre: Geography, Ecology and Conservation of Luzon's Eastern Range

The Sierra Madre is the longest mountain range in the Philippines, spanning 540 km along Luzon's eastern coast and serving as a critical bio...

11 min read

Minori Cave: Archaeology and Geology in Peñablanca, Cagayan

Minori Cave in Cagayan is an archaeological site with Paleolithic and ceramic period artifacts, part of the Callao limestone formation.

10 min read

Pantuwaraya Lake National Park: Geography, Conservation and Hydroelectric Significance

Pantuwaraya Lake National Park in Lanao del Sur, established in 1965, protects a 20-hectare watershed vital to Mindanao's hydroelectric powe...

14 min read

Northern Luzon Heroes Hill National Park

National park in Ilocos Sur, Philippines, established in 1963 covering 1316 hectares of coastal mountain scenery.

11 min read

Callao Cave: Archaeology, Geology and the Discovery of Homo luzonensis

Callao Cave in Peñablanca, Cagayan, is a show cave and archaeological site where Homo luzonensis fossils were discovered.

12 min read

Fuyot Springs National Park: Geography, History and Recreation in Isabela

Fuyot Springs National Park is a protected area in Isabela, Philippines, established in 1938, featuring caves, waterfalls and the Ilagan San...