Laguna Caldera
Laguna Caldera is a geographical depression in Rizal, Philippines. It is broadly elliptical in shape, with dimensions of 20 by 10 km. It has a summit elevation of 743 m or 2,438 feet. The caldera forms the middle lobe of Laguna de Bay, bound by the Morong Peninsula and Talim Island to the west, and the Jalajala Peninsula to the east.According To Philippine Institute of Volcanology and Seismology this caldera is a potentially active volcano
Caldera activity started 1 million years ago, with the youngest eruption dated to 27,000-29,000 years ago. Deposits from the caldera form thick ignimbrite sheets in Rizal, Metro Manila, Laguna, and Bulacan. Remnants of volcanic activity include undated maars at the southern end of Talim Island and a solfatara field on nearby Mount Sembrano.Photographs
