need help with title
 

i saw a movie when i was a kid and the only thing i remember is the final scene where the only survivor is setting in a cave banging a stick or rock and it's obvious she gone nuts i think it might have been something like a hills have eyes type movie but not sure. some help please i'm pretty sure it came out before 1988

I have no clue.

more info
 

there was also scalping i just remembered, i was wondering if it could possibly be Don't Go Near the Park?

think i found it
 

never mind last post i think it might be called Scalps. has anyone seen this?