Llonín Cave, traditionally known as the "La Concha de la Cova", is located on the southern flank of the Cuera Range, around 700 metres from La Molinuca, along the narrow valley that runs north from the banks of the River Cares.
The remains removed from the cave represent the best example of Paleolithic art in the region and are on display in the Archaeological Museum of Asturias, in Oviedo.
In 1957, the cave was used for fermenting Cabrales cheese, but the paintings were not identified as probably being of prehistoric origin until 1971, when a group of cavers explored the cavern.
The rock art forms have been classified into five phases, ranging from the Gravettian to the Magdalenian. There are around thirty animalistic representations, both engraved and painted, being especially abundant those representing deer, although goats, bison and reindeer antlers can also be seen.