Grotto
Nef.
A teapoy
I would call it a cave in.
filigree
because the cave is probaly VERY WINDY and its a cave full of wind monsters
the boys call Stanley cave man because he is part of group
Goffer. Gauffer. Jabot. Peplum. All these apply to sewn in ruffles and similar ornaments on clothing. An ornamental ruffle is also know as a FLOUNCE
hitching post
Spelunking
The opening is called the cave entrance or cave mouth. It is usually an "exit" formed by flowing water.
hieroglyphics
Roman Catholic AnswerI think you are thinking of a grotto, not a cave.