Koranga
New Guinea
Maar
A volcanic crater that is produced by an explosion in an area of low relief, is generally more or less circular, and often contains a lake, pond, or marsh.
Kinenin
Kamchatka
Dotsero
US-Colorado
Aramuaca, Laguna
El Salvador
Fort Rock
The Fort Rock Basin is a maar field in south central Oregon. Almost 40 maars, tuff rings and tuff cones exist in this basin. Most of these features are very eroded. The basin is mostly filled with lake sediments from the old Fort Rock Lake. Many normal faults run through this area. The maar volcanoes of Fort Rock Basin are short volcanic cones with wide, round craters. These are the result of explosions frombasaltic magma meeting surface and ground water as the magma rose to the surface.