Discovered and explored by members of the now-defunct group Talps del Centre Excursionista del Vallès (Sabadell) in the mid 1960's, who apparently named it Avenc d'Any Nou, but practically no record of this exploration remained.

The only data we know are those given by the SIS – CET, who visited and surveyed it in February 1979, believing it to be an unpublished cavity, and wrongly named and published it as Avenc de la Carena del Sabater, since the nearby ridge is not the one known as that of the Sabater; when they realised, they went on to call it del Pujol del Mas Pinetó, which is how it is known today and as it appears on the sign that the Centre Excursionista de Castellar del Vallès installed years ago beside the entrance of the pit.