The Laguna Volcanic Field, also known as the San Pablo Volcanic Field, is an active volcanic field in the Philippines, located between Laguna de Bay, Mount Banahaw volcano complex and Mount Malepunyo range. It is part of the larger Southwestern Luzon Volcanic Field (SWLVF). From Manila, it is about southeast to Mount Makiling, its most prominent volcanic feature. The field is composed of over 200 dormant and monogenetic maars, crater lakes, scoria cones, and stratovolcanoes, the tallest of which is Mount Makiling at in elevation. Many of the maars are aligned along a NE-SW trend. Three generations of maars are present, with the oldest being sediment-filled, like the ones found in Calauan. The youngest maars contain deep lakes with many concentrated in the city of San Pablo. The youngest maar, wide Sampaloc Lake was formed about 500–700 years ago according to local legend, the last major activity in the volcanic field. Volcanism is still evident through the presence of geothermal areas like mud and hot springs. The areas south of Mt. Makiling is the site of one of the earliest geothermal plants in the country. Volcanic features The Philippine Institute of Volcanology and Seismology (PHIVOLCS) lists some of the maars and cones situated in the Laguna volcanic field. All are classified as inactive. Maars Alligator Lake, Los Baños Lake Bunot, San Pablo Lake Calibato, San Pablo Lake Gunao, Dolores, Quezon Imoc Maar, San Pablo Lake Muhikap, San Pablo Lake Palakpakin, San Pablo Lake Pandin, San Pablo Sampaloc Lake, San Pablo Lake Tikub, Tiaong, Quezon Lake Yambo, San Pablo Dolotina Maar, San Pablo Cones Named as hills Bayaquitos Hill, Nagcarlan Bunsulan Hills, Alaminos Imok Hill, Calauan La Mesa Hill, Calamba Mani Hill, Alaminos Mapait Hills, Alaminos Mayondon Hill, Los Baños Palindan Hill, Alaminos Tanza Hill, Alaminos Named as mountains Mount Atimba (Atimbia), Nagcarlan Mount Bayaquitos, Nagcarlan Mount Bijiang, Calamba Mount Buboy, Calauan Mount Bulalo, Calauan Mount Cabulugan, Bay Mount Camotes, Calamba Mount Lagula, San Pablo Mount Lansay, Nagcarlan Mount Luyong, Calauan Mount Mabilog, Calauan Mount Mabilog, Nagcarlan Mount Malauban, San Pablo Mount Malauban-Lansay, San Pablo Mount Mapula, Calauan Mount Masaia, Calamba Mount Nagcarlan, Calauan Mount Olila, Alaminos Mount Tamlong, Calauan See also List of active volcanoes in the Philippines Laguna Caldera Seven Lakes of San Pablo List of inactive volcanoes in the Philippines External links Global Volcanism Program Philippines Institute of Volcanology and Seismology (PHIVOLCS) References Active volcanoes of the Philippines