[3] Covering an area of 210 square kilometres (81 sq mi), it is divided between the municipalities of Caravia, Colunga, Parres, Piloña, and Ribadesella.

The most notable forested area is at the northern end where the trees are clumped and dominated by holly groves and espinera while also containing other species such as ash, beech, birch, elm, hazel, maple, yew, Wild Pear and brush.

Lastly, at the base of the mountain on its north side, there is a microclimate and an enclave of ferns whose distribution in such a non-tropical area makes them very rare, not only in Asturias but throughout Europe.

[4] Wildlife includes fox, wild boar, feral pigs (Sus scrofa), roe deer, and the Asturian horse breed of Asturcon.

[1][2][4][5] Asturias, found in the high mountains of Sierra del Sueve are rare species with black or bay colour but without any white pigmentation.

Also present here are the Alpine chough (Pyrrhocorax graculus), the golden eagle (Aquila chrysaetos), cave bats (Miniopterus schreibersi) and reptiles such as the mountain lizard (Iberolacerta monticola).

[6] An Interpretation Center of the Sierra del Sueve was established in April 2007 by the City of Colunga to guide visitors on visit the sea and mountains.