A volcanic crater is a bowl-shaped depression at the summit or on the flanks of a volcano, formed by explosive eruptions or the collapse of the summit. Volcanic craters are significant in volcanology for understanding eruption dynamics, crater formation processes, and the hazards associated with volcanic eruptions.
Source Harris, S. L. (2005). “Fire Mountains of the West: The Cascade and Mono Lake Volcanoes.” Mountain Press Publishing Company.