Grotte de Choranche is a stunning cave located in the southeastern part of France, in the Vercors Regional Natural Park. The cave was discovered in 1876 by two locals and has since become a popular tourist destination due to its beautiful underground formations.

Visitors can take a guided tour through the cave's vast chambers and passageways, which stretch for over 700 meters. Along the way, they can admire an array of stunning formations, including stalactites, stalagmites, and columns, that have been created over thousands of years by the slow dripping of water and mineral deposits.

One of the most impressive features of Grotte de Choranche is the "Cathedral," a large chamber with a high ceiling and beautiful rock formations that resemble an organ. Another notable highlight is the "Salle des Merveilles," or the "Hall of Wonders," which features a variety of rare and unusual rock formations, including delicate helictites that grow in unusual and seemingly impossible directions.