| M. Lamothe - Owner and discoverer | Found the cave in 1920. |
| André Niederlender - Researcher in Prehistory | The paintings were studied in 1922. |
| Amédée Lemozi - Researcher in Prehistory | Collaborated in the study of engravings in 1922. |
| Michel Lorblanchet - Prehistorian and specialist | Survey of works in the 1960s. |