As a kid I remember watching a movie in the mid-80s.  I was maybe 7 or 8 at the time.  I remember quite a few scenes but can’t find the name online.

Move starts out with astronauts crashed in a desert, I think very close to the ocean.  One astronaut decides to go off to find help.  Several other astronauts stay behind.  Most of the movie is basically a survival story, though the movie is interspersed with flashbacks to their mission (one of them falls into a crater of green liquid, another has his suit punctured by sharp rocks and dies I think).  Back to surviving in the desert, the astronaut who set off by himself is close to death, and some other astronauts find him and bring him water.  I think they start to fight amongst themselves at some point — one of them is killed when one astronaut slams a ladder on the chest of another astronaut.

In the end, just one astronaut survives, and he makes it back to civilization when he finds a small village.  That’s when the credits start to roll.

Anybody know this movie?