|Roundtop is an eroded and glaciated stratovolcano that is located on Unimak Island in the Aleutian island chain. Some hot-springs activity was reported on Roundtop's slopes in the 1930's.|
Sources of Information:
Charles A. Wood & Jurgen Kienle, 1990 Volcanoes of North America: United States and Canada, Cambridge University Press, Cambridge, p. 45.