Just Before Dawn. 1981.
Five people go camping in the woods and are hunted by a machete wielding madman.
This is a mix of Friday 13th with the machete and Deliverance, set in the backwoods of Oregon makes it feel atmospheric and close to isolation with nowhere to hide or run. George Kennedy plays the local park forest ranger who tries to keep the peace. The acting from the naive teens are not bad, usual they start being annoying then slowly warm up to them it doesn't really rely on jump scares but suspense is built up well and perfect cinematography, One I will watch again.
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