Apollinaris Mons

Apollinaris Patera is a shield volcano on Mars. The oval base of the extinct volcano has a diameter of about 180 to 280 kilometers. Its height reaches about 5 kilometers above the surrounding terrain. Its caldera has a diameter of about 80 kilometers and a depth of several hundred meters. It is located in the south near the equator, on the southeastern edge of Elysium Planitia.