Sunburst (1975)

A pair of college students go on a trip up to the mountains to look for a friend who dropped out of school to find personal fulfillment apart from the norms of American society. Along the way, the couple is warned of dangerous terrain and unfriendly local residents who are not worth the trouble of finding a lost friend. The film stars Robert Englund in the role of the lost friend before he become a household name as the terrifying boogeyman Freddy Krueger.