Lake Holon

Lake Holon, also known as Lake Maughan, is a pristine crater lake inside the caldera of Mount Melibengoy (Mount Parker) in Barangay Salacafe, Tboli, South Cotabato, Mindanao, Philippines. Formed by the 1641 eruption of Mount Parker, it lies at about 1,400 meters elevation. Noted for its emerald-green waters, forested crater walls and rich biodiversity, it is a protected landscape and sacred site for the T'boli people.

Visitors can expect a strenuous trek through forested trails to reach a secluded, emerald-green crater lake surrounded by steep, forested caldera walls at high elevation. The site offers a designated camping area by the lakeshore, viewpoints over the lake and crater, and opportunities for photography and nature observation. Access is via a registered jump-off in Salacafe with mandatory guides; facilities are basic and the environment is largely natural and undeveloped.

Lake Holon was formed in the caldera of Mount Melibengoy (Mount Parker) following its major eruption in 1641, which created the crater that later filled with water to form the lake. The volcano and lake are part of the Mount Parker protected landscape in South Cotabato.

The lake is considered sacred by the T'boli indigenous people of South Cotabato. It holds cultural and spiritual importance and is traditionally respected as a sacred natural site, with local customs and community-led stewardship governing visitor conduct.