This entry will focus on the Apache fight location as featured in El Condor. This location like many others was shot in the Spanish desert of Tabernas. Of particular interest is a stack of rocks presumably set up by the production where LVC sits to watch the fight between the Apache Brave and Luke (Jim Brown) that still exists over 45 years later (although slightly collapsed).
Establishing shot of the watering hole
Jaroo tricks Luke into fighting the Apache
Jaroo moves to his stone seat
Luke fights the Apache
Jaroo cheers Luke's victory
Below are some additional shots of the location (click to enlarge)