Cheyenne | Season 1 | Episode 1 | (Mountain Fortress)

Episode aired September 20th, 1955

Cheyenne and his co-worker Smitty worried about smoke signals decide to hide on a high area but find an outlaw gang already there. When the Shoshone attack a stage, the group rescues the driver and woman passenger but are now trapped.

IMDb: https://www.imdb.com/title/tt0540130