The Strangeness (1985)
People trapped in a mine are killed one by one by a stop-motion monster that unintentionally looks like a vagina! And no I'm not joking!
@Mark Sawicki (aka Dan Flanders)
Thanks for being a good sport about it! I actually like the movie, for all its flaws it did have an occasional creepy moment and it was obvious everyone involved tried their best to make it a good film, even if it was an uphill battle given the budget. I have the DVD you linked to and all the extras as well as the interviews including yours make it more than worth buying!
Mark Sawicki commented
I co produced and acted in this film and I approve this request. The film was rescued from the lab by codered who made a lot of extras http://codereddvd.com/product.php?id=54 The extras reveal why the monster looks the way it ............uh........seems to. The film was featured in its own chapter in the book Nightmare USA by Stephen Thrower https://www.amazon.com/NIGHTMARE-USA-Untold-Exploitation-Independents/dp/1903254469
Here's the trailer, it's in Spanish but the movie is American and in English: