Mount Sidley is the highest volcanic peak on which continent?

Mt Sidley is the highest dormant volcano on Antarctica, and is member of the Volcanic Seven Summits.

The snow-covered shield volcano stands about 4,200 meters (13,800 feet) above sea level and 2,200 meters (7,200 feet) above ice level. It is marked by a 5 km (3 miles) wide caldera on the southern side and stands NE of Mount Waesche in the southern part of the range. The caldera wall is about 1,200 meters (3,900 feet) high.

Along a 900-kilometre (560-mile) stretch of Antarctica's Pacific Coast are a chain of 18 major volcanoes arising from the ice sheet. Sidley is the highest of 5 volcanoes in the Executive Committee Range of Marie Byrd Land. This range stretches about 80 kilometers (50 miles) from north to south.

It was discovered during a flight by the United States Antarctic Service on December 15, 1940. Mt Sidley is the only mountain in the range not named after a committee member.

According to the USGS Geographic Names Information System, Rear Admiral Richard E. Byrd discovered the volcano during a flight on November 18, 1934. He later named the mountain after Mabelle E. Sidley, the daughter of a contributor to the Byrd Antarctic Expedition.

Despite its height, the volcano's extremely remote location means that it is little known even in the mountaineering world compared to the much more accessible Mount Erebus. The first recorded ascent of Mt Sidley was by New Zealander Bill Atkinson on January 11, 1990.