THIRSTY DEAD, THE(1973)
In the set: 100 Greatest Terror Classics

This is not terrible, but it's far from great!
The premise is decent, and the women are good
to look at, but it's kind of slow and plodding!
Better than some in this set, but worse than
others! C+

A review from IMDb.com:

I rented this under suspicion. First of all, it
was PG. A PG horror movie doesn't promise much.
But I gave it a chance.

It was...okay....

The movie is about four women--Laura, Claire,
Ann, and Bonnie--who are captured and taken
to a cave in the jungle. They see they that
there is a large cult-like group there, but
they don't know why they are there. Soon Laura
realizes that they have been brought here for
a terrible reason. She, inparticular, is
portrayed as a great queen, and the other
three, with many other captives, are kept
there for their blood, which keeps the
would-be dead cult alive and young. The
four must escape.

It isn't a terrible movie, but it isn't
really scary. It's somewhat interesting,
and if you're looking for a very mild horror
movie, then I suggest this. There is barely
any blood, no profanity, and no nudity.
The acting isn't terrible. (What a surprise!
Most movies like this have the worst of
actors.) And there is a lot of action
towards the end. If you are into softcore
horror movies, check this out. If you want
something more, pass it. - WritnGuy-2