My brother and I also enjoyed making fun of how bad this film was back when channel 9 showed it every two months or so in the mid to late seventies. Remember the incredible delivery of the girl talking to her dog, reminiscent of that "What? Sandwiches again?" commercial about learning to drive a tractor-trailer? I mainly recall the moment when they pull the plate covering the ancient tomb off and gas spurts out, with the leader of the expedition a full thirty seconds later surmising that the gas might be coming from a hole. I wonder if that scene was in any way an inspiration for Steven Spielberg in the equivalent scene in "Raiders of the Lost Ark" when ... never mind.
Review of Curse of Bigfoot
