A small funnel-shaped depression in the summit of a volcano at the top of the conduit or pipe through which the magma reaches the surface
A hole caused by an object hitting the surface of a planet or moon D DEBRIS Broken, scattered remains; rubble; pieces of rubbish or litter
bowl-shaped depression, usually round and with steep sides Craters are formed by explosive events such as the eruption of a volcano or by the impact of a meteorite A caldera is a much larger feature
A crater is a very large hole in the ground, which has been caused by something hitting it or by an explosion. Circular depression in the surface of a planetary body. Most craters are the result of impacts of meteorites or of volcanic explosions. Meteorite craters are more common on the Moon and Mars and on other planets and natural satellites than on Earth, because most meteorites either burn up in the Earth's atmosphere before reaching its surface or erosion soon obscures the impact site. Craters made by exploding volcanoes (e.g., Crater Lake, Ore.) are more common on the Earth than on the Moon, Mars, or Jupiter's moon Io, where they have also been identified. Crater Lake meteorite crater Sunset Crater Volcano National Monument Craters of the Moon National Monument