Sidley Mount
Sid·ley
(sĭd′lē), Mount A volcanic peak, 4,181 m (13,717 ft) high, of Marie Byrd Land in Antarctica. The highest volcano in Antarctica, it was discovered by Robert E. Byrd in 1934.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.