Saint-Elzéar Cave is located in the Saint-Elzéar Karst Biodiversity Reserve. The well protected grotto is home to a variety of concretions, ancient cave networks, and a paleontological site dating back to the Postglacial period. Grotte de St Elzéar is almost 500,000 years old which makes it one of the oldest caves in Quebec. Throughout the cave, visitors can see stalactites, stalagmites, and moon milk as they explore the cool depths of Saint-Elzéar. Along with the cave formations, paleontologists have found species that have since disappeared from Gaspésie. The cave was discovered in 1976, however in the 1980s, the Ministère du Développement durable, de l’Environnement et des Parcs started the development of an ecological reserve to protect the great cave.