I know this is a wide range but the movie is 70s-80s. It seems like it was aired on the sci Fi channel. The only thing I remember is a woman was chained in a cave and some sort of monster came in to rape her I think. That’s all I remember because I had to catch the school bus..
“Blood Tide”(1982)?
Not much info to go on, but that’s a guess.
I appreciate the feedback but that wasn’t it