A volcanic caldera is a large, bowl-shaped depression that forms at the summit of a volcano after a massive eruption. It's basically a big hole in the ground left behind when a volcano collapses inward due to the emptying of the magma chamber below.
Sentences with «volcanic caldera»
The Sierra Negra volcano is one of five volcanos on the island of Isabela, and boasts the second largest volcanic caldera in the world. (galapagosalternative.com)
Aogashima is a volcanic Japanese island located in the Philippine Sea and notable for a unique geographical feature: the island is a massive ancient volcanic caldera with a younger volcano nested inside creating a smaller (secondary) volcanic cone. (howtogeek.com)
Around the massive volcanic caldera of Bali's most famous volcano, Mt. Batur and the shores of its crater lake, lies spectacular and picturesque hiking terrain. (bali-tourism-board.com)