676K views · 8.3K 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

26K views · 437 reactions | Volcanic activity is rising near Naples, with over 2,000 earthquakes in February. Just west of Vesuvius, the vast Campi Flegrei caldera sits beneath a densely populated area. Seth Doane speaks with scientists tracking the looming threat. https://cbsn.ws/44VoGQz | CBS Sunday Morning | Facebook