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 (attraction) to the facility's base station one half mile below. In this base station is a huge steam-powered bellows that pumps fresh air down from the surface, massive spring-pillars that hold the ceiling up to prevent cave-ins in case of earthquakes, and communication center which is currently giving warnings of increased seismic activity, but the scientist who mans it is currently away on a tea break. Riders then board steam-powered mine vehicles that travel through pre-drilled tunnels into the heart of the Earth. The ride begins through a cavern of colorful glowing crystals, before entering a giant Mushroom Forest, which is