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
Beneath the Planet of the Apes Beneath the Planet of the Apes Beneath the Planet of the Apes is a 1970 American science fiction film directed by Ted Post and written by Paul Dehn. It is the second of five films in the original "Planet of the Apes" series produced by Arthur P. Jacobs. The film stars James Franciscus, Kim Hunter, Maurice Evans, and Linda Harrison, and features Charlton Heston in a supporting role. In this sequel, another spacecraft crashes on the planet ruled by apes, carrying astronaut Brent who searches for Taylor and discovers an underground city inhabited by mutated humans with psychic powers. "Beneath