Roundtop Mountain (Alaska)

Roundtop Mountain is a stratovolcano located on the Aleutian island of Unimak in the U.S. state of Alaska.^[2] Its last eruption was sometime between 9,100 and 10,000 years ago.^[3] This geographic feature was first called "Dome" in 1897 by Lieutenant Commander J. F. Moser, of the U.S. Navy. Its name was reported as "Round Top" by the United States Coast and Geodetic Survey in 1902. Isanotski Peaks, the nearest higher neighbor, is positioned 5.9 mi (9 km) to the west-southwest.^[1]

Roundtop Mountain
East aspect from False Pass
Highest point
Elevation	6,100 ft (1,900 m)[1]
Prominence	3,000 ft (910 m)[1]
Coordinates	54°47′52″N 163°35′45″W
Geography
Roundtop Mountain Alaska, United States
Parent range	Aleutian Range
Topo map	USGS False Pass D-5
Geology
Mountain type	Stratovolcano
Volcanic arc	Aleutian Arc
Last eruption	9,100–10,000 years ago

See also

• List of mountain peaks of Alaska
• List of volcanoes in the United States