What's inside the Trough? (CTX Frame - Original NASA/MGS/MSSS b/w Frame)

Caption NASA originale:"This MGS-MOC image shows Channels carved by catastrophic Floods in the Tharsis Region of Mars. This area is located North/West of Jovis Tholus, and East of the large Martian Volcano Olympus Mons. The Terrain is presently mantled with fine Dust".

Location near: 10,5° North Lat. and 203,4° West Long.
Image width: width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern Autumn