Hadriacus Mons

The Hadriacus Mons (also Hadriaca Patera ) is an extinct volcano on Mars. He's older than the adjacent Tyrrhenus Mons. He stands at the edge of a plain, in which the lava flows could extend over several hundred kilometers. The volcanoes on the red planet are no longer active for millions of years. Hadriacus Mons has a diameter of 450 km (330 km * 550 km ) and is 1.1 km high. The caldera has a diameter of 90 km and is 700 m deep.

Description

The caldera of the volcano, is located at 30 ° 12 ' S, 92 ° 47' Omar - 30.292.79. On the southern slope of the river valley 794 km long Dao Vallis (37 ° 37 ' S, 88 ° 53' Omar - 37.6188.89 ) begins and extends to the eastern base of the Mars crater Hellas Planitia. The Dao Vallis is 360 km long Niger Vallis (34 ° 58 ' S, 92 ° 34' Omar - 34.9692.57 ), beginning on the southeastern flank of the volcano extended. Just to the south runs the 527 km long river valley Harmakhis Vallis (40 ° 59 ' S, 90 ° 4' Omar - 40.9890.06 ), which also ends at the eastern base of the Martian crater.