Mount Terror is an extinct volcano about 3,230 metres high on Ross Island, Antarctica, about 20 nautical miles eastward of Mount Erebus. Mount Terror was named in 1841 by polar explorer Sir James Clark Ross for his second ship, HMS Terror. The captain of Terror was Francis Crozier, a close friend of Ross for whom the nearby Cape Crozier is …Mount Terror is an extinct volcano about 3,230 metres high on Ross Island, Antarctica, about 20 nautical miles eastward of Mount Erebus. Mount Terror was named in 1841 by polar explorer Sir James Clark Ross for his second ship, HMS Terror. The captain of Terror was Francis Crozier, a close friend of Ross for whom the nearby Cape Crozier is named.