The whole cliff stunt is lifted and copied in Season 4 Episode 24 TNOT Plague, right down to the visible guywires on Jim's gunbelt. In the Plague episode, Conrad wears similar but not exact clothing and in that scene the only difference is the view he has through his telescope where he sees Lana Wood with the villain instead of Sordo with the stolen stallion
Star Trek, Friday's Child had a scene filmed on the same location that Jim held off the last set of bandits.