Trident Volcano is an eroded volcanic complex consisting of numerous domes (up to 23), as high as 6,115 feet (1,864 m) in elevation, along a northeast-southwest oriented volcanic front on the Pacific Ocean side of the Alaska Peninsula. A new dome was emplaced beginning in 1953 at an altitude of 3,599 feet (1,097 m) in an amphitheater on the southwest flank of the southwest peak.