Grotte de Tourtoirac, Limestone cave in Tourtoirac, France.

The grotte de Tourtoirac, also called grotte de la Clautre, is a cave in Jurassic limestone in the Auvézère valley, reached since 2010 through a 25-metre shaft fitted with a lift. Its 320-metre visitor route runs past flowstone columns, draperies, gours and fistulous stalactites, including two shaped like a tree frog and a dolphin. A metal walkway with mesh flooring and a tubular handrail follows the rock, and LED lighting picks out the cream, tan and brown tones of the ceiling.

Speleologists from Périgueux attempted the flooded passage from the lavoir fountain from 1978; in 1980 Gérard Bugel pushed 130 metres up the siphons but found no way into the dry galleries. On 28 January 1995 Jean-Luc Sirieix followed Bugel's old line through a siphon into the decorated chambers, and drowned there with Annie Maire on 5 February. Access works began in May 2007 with a 25-metre shaft and lift; the cave opened on 1 May 2010.

The cave takes its alternate name, grotte de la Clautre, from the fountain of the same name that feeds the village washhouse. Explorers had tried to enter from that washhouse since 1978; in 1980 Gérard Bugel pushed 130 metres up the siphons before turning back. The formations nicknamed "la rainette" (a frog) and a dolphin sit near the middle of the tour route.

The 320 m route is reached by a 25 m shaft with a lift carrying up to 26 visitors; a second shaft at the far end serves as an emergency exit. The first quarter is a concrete path, then metal walkways fixed to the rock or on piles. Gradients of 5% make the circuit accessible to wheelchairs and pushchairs.

LED lighting inside the cave illuminates the mineral formations, making some of the natural structures appear like jellyfish suspended in the void. This artificial light helps visitors see fine details and shapes that would otherwise remain hidden in darkness.