re: Optical illusion
Fairly common with some sun angles on Mars and the Moon.
The craters are depressions with raised rims and interesting fill. The "channel" is an arcing depression.
See if this version helps clarify things:
Space/Science » in reply to Pedestal craters and raised streambed?
Fairly common with some sun angles on Mars and the Moon.
The craters are depressions with raised rims and interesting fill. The "channel" is an arcing depression.
See if this version helps clarify things: