AF-Roger
Well-Known Member
Ice, probably frozen nitrogen, that accumulated on the highlands (right) is draining from Pluto’s mountains into the informally named Sputnik Planum through a series of valleys (red arrows). The flow front of the ice moving into Sputnik Planum is outlined by the blue arrows.
The setting sun illuminates a fog or near-surface haze, cut by the parallel shadows of many local hills and small mountains on Pluto
Article: Pluto at Dusk: Spectacular, and Spookily Earthlike – Phenomena: No Place Like Home