Whai is the biggest caldera in the world ?
The biggest caldera in the world is the caldera called Apolaki located in the Philippines Sea. This caldera was discovered in 2019. Apolaki means Giant God.
The University of the Philippines Institute of Marine Sciences announced that Apolaki Caldera is twice the size of Yellowstone Caldera in the USA, which is about 60 km long and has a diameter of roughly 150 kilometers.