The geosite of the Bric Gettina mines (also known as the Purìn mines because the Pora stream is born there) hosts some small tunnels dug into the rock, along a quartz vein. The main gallery, 35 meters long, can be visited with caution because it has partially collapsed, while the other two, one on the right and one on the left, can be explored with greater tranquility. The extraction material, composed of minerals and mother rock, underwent a first lightening process in the flat areas in front of the tunnels to be then transported by mule to the ironworks at the bottom of the valley, where the complete processing took place. The waste material was unloaded in the ravaneto in front of it, where the white expanse of debris can still be seen. There is also a small stone building, known as the blacksmith's house, whose structure is attributable to that of the typical Ligurian boxes, useful as makeshift shelters.