. . . need help!

There's this movie, I think it came out in the early 80's.

At first, I thought it was either House, or House II, but I've since ruled them out.

All I know, is that it has this dead/zombie cowboy--decomposing corpse, all skin-and-bones. He rides a similarly rotting horse.

Anyone who can point me in the right direction?

The cowboy wore a handkerchief around his neck/face.

thanks in advance!