An hour-long tour by boat of underground Myst'ry River. Vistors travel the course of this ancient underground river, see rare blind cavefish and blind crayfish. Surface facilities include the Colglazier Visitor Center and Gift Shop, our Myst'ry River gemstone sluice, picnic areas, shelterhouse, and 1/2 mile nature trail. Open every day March 16 thru October 31,