of the most visited of the region. Remains of a small reservoir and rock art, both from the Paleolithic have been found here. Chufín The Cave of Chufín is located in the village of Riclones. It is located at the confluence point of several rivers and Nansa Lamasón in an environment with steep slopes amongst other caves with rock art. Chufín contains different levels of occupation, the oldest being around 20,000 years old. Even though the cave is small and of profound simplicity it subtle red paintings of deer, goats and cattle which are represented very schematically and a large number of symbols. One group, called "sticks", accompanies the animal paintings inside the cave. There are also a large number of pointillist drawings, including some around each hole in the rock which have been interpreted as a representation of a vulva. The cave has been declared a World Heritage Site by UNESCO in 2008. La Estación The Cave of La Estación is located near the cave of La Clotilde, in Santa Isabel de Quijas. It is notable for paintings in a large room representing horses and other signs which are not identifiable, dating from about the Aurignacian or Gravettian cultural periods. La Fuente del Salín Fuente del Salín Cave is located in the municipality of Val de San Vicente, and contains an archaeological site discovered in 1985. The path is accessible only in times of drought, because it lies along an underground river. The remains are a reservoir belonging mainly to the Upper Paleolithic, dated to 22,340 years ago by Carbon-14 dating, and also a hearth; rock art and several negative handprint paintings are visible in this room, in addition to positive handprint paintings in other rooms. La Garma The Cave of La Garma is located north of the village of Omoño, in the municipality of Ribamontán al Monte. It was found to wall paintings and fossils in a Lower Gallery, one of the best preserved Magdaleinian period floors. It is part of the Cave of Altamira and Paleolithic Cave Art of Northern Spain World Heritage Site. Hornos de la Peña The Cave of Hornos de la Peña Cave was discovered in 1903 and is situated on a hill near the village of Tarriba, San Felices de Buelna. The most notable paintings are a bird-horse-man at the end of the cave; a headless bison, horse and others at various levels