Just Before Dawn

The name of this movie is Just Before Dawn released in 1981-10-14 and it's main theme is In the Oregon mountains, a pair of hunters encounter a machete-wielding killer in an abandoned church. Meanwhile, five campers arrive to examine some property one of them has inherited but are warned by the forest ranger not to venture forth. Soon after they set up camp, they begin hearing strange noises, encounter a mysterious singing girl and start disappearing one by one..