FleshEater 4K 1988

A group of young people go to have fun in the forest. At the same time, a certain farmer was uprooting stumps with a tractor and accidentally came across a stone slab. The slab has a warning embossed on it that it is better not to touch it. The farmer does not heed the advice and removes the slab, but finds a real live corpse underneath it.

After looking around and snacking on the farmer, the corpse goes to get food. And food for the reanimated dead is known to be living people, and there are so many tasty teenagers nearby.