The Lazarus Pit?

These pictures were leaked onto the net the other day. They are two pictures from a set of on-set pictures from "The Dark Knight Rises" shoot in India. The images shows us a pit, which is been rumored (by fans) to be the Lazarus Pit from the "Batman" comics.
Supposedly the young Ra's Al Ghul has something to do with it, as Josh Pence (who's playing the younger version of the character) was spotted near by the site.