Despite being known since time immemorial, the first speleological news we know of are the explorations carried out during the month of February 1955 by members of the GES – CMB (Delegació a Terrassa) and they remained practically forgotten, even though at that time they were able to explore a series of galleries that they calculated at 186 metres of development and that afterwards remained covered by sediments at the lowest point of the cavity, as the GE Badalona and the SIS – CE Terrassa were able to confirm when they worked in the area during 1974.

It is not until August 2003 that Marc Anglès (SIS) is able to pass the sumping passage of la Saiola and verify that, as the GES people said in 1955, the cavity continued through a series of ascending galleries.

The spring of 2004 was very rainy and all the springs became active. On 2 October of the same 2004, different members of the SIS are able to enter again and reach the end of the cavity, searching for possible continuations and some hypothetical exit to the outside. Still, a short time later they make a second entry, checking survey data, from a survey which incidentally has still not been seen complete and cannot be compared with the 1955 sketch.

At the end of August 2024 our friend Salvador Vives (SIS) sends us the elevation of the 2004 survey. In it one can see how the passage that was impassable in 1974 was passed and the ascending conduits begin, where with great difficulties of progression they reached a totally impenetrable point.