The Folsom site (New Mexico, USA) is justly famous as the place where in 1927 four decades of sometimes bitter controversy came to an end, when it was finally demonstrated humans had been in the New World since the Pleistocene (Meltzer 1993). Folsom became the type site for the Palaeoindian period and distinctive fluted projectile point that bears its name (see Hofman 1999). Yet, as the excavations done in the 1920s by the Colorado (now Denver) and American Museums of Natural History focused initially on the recovery of Bison antiquus skeletons suitable for museum display, and latterly on documenting the association of projectile points with those bison remains, many fundamental questions of interest about the site’s stratigraphic, environmental and archaeological context were left unanswered (and often not asked).