Mars - Viking 1 Orbiter
Lava flow front at Pickering Crater, Mars
This Viking 1 Orbiter image of Pickering crater on Mars
shows the edge of a large volcanic flow which originated
from Arsia Mons, about 1500 km away. Flow fronts are visible
within the 120 km diameter crater near the central peak. The
image is about 280 km across and north is at ~1:30.
(Viking Orbiter 056A12)
Mars
Viking Missions
Mars: Geology
Volcanism in the Solar System