Mother Lode (1982)
A couple of youngish adventurers go into the wilderness of British Columbia in search of a lost colleague. Their plane crashes and they find themselves at the mercy of a crazed old Scottish miner, who has lived in isolation for many decades searching the mountain caves for a chamber of long lost gold. He is prepared to do anything - including murder - to keep his gold for himself. gold, greed, mine, mining, twin brother, murder, airplane crash, missing person, prospector, cave in, british columbia
ETC.
