I don’t know the name of this movie, but it begins with a man and his wife driving in a car on a country road and they run out of gas. They walk to a nearby farmhouse and ask the farmer if he has any spare gas. He tells them he’ll help them, but insists that they look at his quartz cave and animals that he has on the property. He lures them into the cave, and the next thing they know they are locked in a cell with other people also being held captive and the farmer divulges he is holding them to be food for his “creature”, which looks just like the creature from the black lagoon, except it isn’t the creature from the black lagoon. I fell asleep before it was over, so I don’t know how it ends or the name of the movie. Can anyone help?