In Pursuit of Treasure (1972)
"It was set in the scientific future, it had robots in it," Kaye recalls. "A small group of disenfranchised people in this small town come at night and try to tear apart the mining operation."
Specifically, the disenfranchised were a tribe of Indians who had been forced off their ore-rich land by private speculators who surrounded the mine with a giant red, electrified fence. The story focused on them and a young man who comes West and falls in love with the wife of the mine's overseer. It was inspired by persistent legends, fueled by Southwestern cave petroglyphs, of Aztec gold having been buried in North America.