Bluespring Caverns is an underground cave in Lawrence County Indiana. It is approximately 75 miles south of Indianapolis.

The Dark Prophecy

In The Dark Prophecy, after repeating the prophecy given to Apollo at the Grove of Dodona, he and Meg are able to deduce that Bluespring Caverns is the location for the new Cave of Trophonius and subsequently the location of the Oracle of Trophonius.