681K views · 8.4K reactions | WHAT IS CALDERA? A caldera is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcanic eruption. The ejection of large volumes of magma in a short time can upset the integrity of a magma chamber's structure by in effect removing much of the chamber's filling material. #jayography #caldera #geography #maps #educationalcontent | Jayography | Facebook

398K views · 7.3K reactions | WATCH: The crater lake or caldera of Taal Volcano, once full of water now seems empty or at least have considerably less water after its phreatic eruption last Sunday and lava fountaining early Monday morning. The volcano island is also covered in volcanic ash after 4 days of activity. | via Raffy Tima, GMA News Bisitahin ang www.gmanews.tv para sa ibang balita. | GMA News | Facebook

1.8M views · 14K reactions | The ground is roaring beneath Santorini;...