1912 The Bégouën brothers undertook fruitful excavations at Tuc d’Audoubert shortly after its discovery.
1925-1937 Louis Bégouën excavated alone at Enlène and found high-quality Magdalenian material. Considering his methods outdated, he stopped his work to save some material for future excavations. A part of his collection is in the Musée de l’Homme in Paris.
1920-1938 The Abbé Breuil, called upon by Count Bégouën, worked with great skill to make copies of the Trois-Frères engravings, aided by some of his pupils and Louis Bégouën.
1964-1985 Jean and Yvonne Vertut, with Robert Bégouën, carried out the first colour photographic survey of the Volp caves.
1970-1971 Robert Bégouën, with several friends, undertook a first trial excavation in La Salle du Fond at Enlène, revealing that the deposit was far from exhausted.
1976-1990 Jean Clottes and Robert Bégouën, with the SRA Toulouse team and numerous volunteers, successfully excavated at Enlène.
1985-1990 Robert Bégouën and his team (Jean Clottes, Valérie Feruglio, Andreas Pastoors) studied all the remains in La Salle du Foyer, a small chamber at the rear of Trois-Frères.
1992-2004 Robert Bégouën and his team (Carole Fritz, Gilles Tosello, Jean Clottes, Andreas Pastoors, François Faist) brought to a conclusion an exhaustive study of the Tuc d’Audoubert cave.
In 1995 the research was classified as of National Importance by the Ministry of Culture.
2004-2008 Writing the monograph on Tuc d’Audoubert, Le sanctuaire secret des bisons.
2009-2013 Writing a new monograph: La caverne des Trois-Frères.