The Renfro Valley Performers took the stage for a Front Porch Pickin' concert inside the Great Saltpetre Cave in Rockcastle Co., Ky., on Saturday, Aug. 20, 2011. Photo by Pablo Alcala | Staff

Guitar player, Wayne Combs smiled during some banter between songs of the Renfro Valley Performers Front Porch Pickin' concert inside the Great Saltpetre Cave in Rockcastle Co., Ky., on Saturday, Aug. 20, 2011. Photo by Pablo Alcala | Staff

Left to right, Wanda Barnett, Wayne Combs, Susan Tomes Laws, Mark Laws, Jeff Watson, and Kevin Grissom of the Renfro Valley Performers performed a Front Porch Pickin' concert inside the Great Saltpetre Cave in Rockcastle Co., Ky., on Saturday, Aug. 20, 2011. Photo by Pablo Alcala | Staff

Volunteer caver, Ralph Mann of Verona watched with his daughters Greta Mann, left, and Petra Mann, right, during the Renfro Valley Performers Front Porch Pickin' concert inside the Great Saltpetre Cave in Rockcastle Co., Ky., on Saturday, Aug. 20, 2011. The grown daughters, age 24 and 27 respectively, now live in New York state, but have been visiting Kentucky caves with their father since childhood. Photo by Pablo Alcala | Staff

Left to right, Wanda Barnett, Wayne Combs, Susan Tomes Laws, Mark Laws, Jeff Watson, and Kevin Grissom of the Renfro Valley Performers performed a Front Porch Pickin' concert inside the Great Saltpetre Cave in Rockcastle Co., Ky., on Saturday, Aug. 20, 2011. Photo by Pablo Alcala | Staff

An audience of 367 ticket holders and about 40 volunteer cavers watched the Renfro Valley Performers Front Porch Pickin' concert inside the Great Saltpetre Cave in Rockcastle Co., Ky., on Saturday, Aug. 20, 2011. Photo by Pablo Alcala | Staff

Some visitors took a look around the caves after the Renfro Valley Performers Front Porch Pickin' concert inside the Great Saltpetre Cave in Rockcastle Co., Ky., on Saturday, Aug. 20, 2011. Photo by Pablo Alcala | Staff

Many of the about 40 volunteers began taking down the set and the chairs immediately after the Renfro Valley Performers Front Porch Pickin' concert inside the Great Saltpetre Cave in Rockcastle Co., Ky., on Saturday, Aug. 20, 2011. Photo by Pablo Alcala | Staff