This is where I remember it to be. It was in a slight depression around the bushes. If it's still there and being used, there should be an obvious small foot path leading to it. It does not go too far into the mountain and there used to be cutouts every few feet with a candle. In the main "cavern" there should be a bunch of candles. Proper etiquette was to bring fresh candles with. At a minimum, bring a flashlight and lighter.
It looks like there is a newer parking area. We had to park at the top of the Cul de sac and jump a fence.