After analyzing and publishing Bordes' collection from Pech de l'Azé IV, we conducted a four year excavation of the site to better understand the geology and site formation processes, to obtain dates for the sequence, and to obtain a new controlled sample to compare with Bordes' sample from the site. The excavations ended in 2003, and in 2017 the monograph was published. This web site gives some background to the work we did, and touches on some results. For a full presentation of the results, please refer to our publications page.