Lombrives cave is located in Ornolac-Ussat-les-Bains, at the eastern edge of the Pyrénées Ariégeoises Natural Regional Park, Ariège, southwestern France. Earliest excavations by Félix Régnault took place in the late nineteenth century that confirmed human occupation during the Neolithic.[1] The Lombrives cave has been declared the largest or widest cave of Europe in terms of volume. Having a length of 39 kilometers (24 mi) it is certainly not the longest cave, compared to several other European sites, that exceed a length of over 200 kilometers (120 mi).[2][3]