The village of Equi Terme, located in west Lunigiana, lies ensconced among the marble mountains of the Apuan Alps Regional Park. This area, so full of water, has been sculpted and shaped by long processes of erosion, producing karstic formations of huge significance and beauty. The Buca and the Grotte with their unfolding network of galleries, typified by breathtaking concretions and subterranean lakes and, in the same chthonic context, the great prehistoric refuge under Mount Tecchia. The Solco (the Groove) is a deep, narrow natural canyon at the foot of the Pizzo d’Uccello which, standing at 1781 metres, is one of the most striking summits in the Apuan range. Thanks to its two defining characteristics – abundance of water and natural cavities – the area has had the human footprint since the oldest epochs of prehistory.