In the early years of the 20th century , the Gundungurra people penetrated the caves as far as the subterranean water , carrying sick people to be bathed in this water , which they believed to have curative powers .
In the early years of the 20th century , the Gundungurra people penetrated the caves as far as the subterranean water , carrying sick people to be bathed in this water , which they believed to have great curative powers .