80s Horror Cave Swimmers

by Dani
(Phoenix, AZ)

I remember watching a movie back in the mid to late 80's, and all I can remember is a group of kids (possibly a couple of teenagers) that were trying to run away from something and they ran into a cave. The cave had a lagoon in it, but the only way they could get out was to swim underwater beneath part of the cave and one or a couple of the kids was really scared to do that.

This has been driving me nuts! If someone knows the movie, please please please let me know!

Thanks!