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
To the Edge of the Earth Edge of the Earth" album liner notes. To the Edge of the Earth To the Edge of the Earth is a limited edition extended play (EP) by American rock band Thirty Seconds to Mars, released in the United States on March 25, 2008 by Virgin Records. The two-disc set includes three different recordings of the band's track "A Beautiful Lie" and a DVD featuring two versions of the song's music video. The photography for the release was handled by Jacques Descloitres from NASA, who provided satellite images of the Arctic Circle. "To the Edge of the Earth" was conceived in