Magma chamber of magma chambers can be mapped using seismology: seismic waves from earthquakes move more slowly through liquid rock than solid, allowing measurements to pinpoint the regions of slow movement which identify magma chambers. As a volcano erupts, surrounding rock will collapse into the emptying chamber. If the chamber's size is reduced considerably, the resulting depression at the surface can form a caldera. Magma chamber A magma chamber is a large pool of liquid rock beneath the surface of the Earth. The molten rock, or magma, in such a chamber is under great pressure, and, given enough time, that pressure can
Journey to the Center of the Earth (2008 theatrical film) They reach the bottom of a volcanic vent filled with different varieties of crystals, including Diamonds, but learn the floor is actually Muscovite. Sean accidentally drops a diamond, which breaks the Muscovite, and they begin to fall towards the center of the Earth. The vent eventually becomes a water slide which drops them safely into a lake in the center of the Earth, which turns out to be a completely separate world contained within the Earth. The group starts seeking a way back to the surface. Along the way, they find evidence that someone had been there a hundred years