Our Green Tortoise South Park Loop Trip, Sept., 1998. Where: Balmorea, spring fed pool. The largest spring-fed pool development in the U.S. (world?). It is huge. The passengers all enjoyed the high-diving board...it was the real McCoy. Click on photos to see full screen view. The nicest pool I've ever seen. Bill goes for the triple reverse gainer, with a twist; extra points for cannon-ball entry. The Balmorea campground.