Does anyone know the history of this tree?

It lives on Water Street between, I think 19th and 20th.   The tree has a wise face attached about 8 feet up, and at it's feet is a little shrine.  A natural cave created by the tree's growth.  The shrine contains many interesting icons and trinkets, that have actually begun to escape. They are outside the tree cave as well.  The objects in the shrine move and change from time to time. I always like to stop and see what is different. Today there was a circular piece of wood with a little design and painted red. it was attached with a screw. Mostly the objects are placed about.

So, what's the story? Does anyone know? How long as it been there? Who started the wise man and his shrine?