Guidebook to 38 walks and 4 short treks of 3-4 days in the stunning Picos de Europa mountains of northern Spain. The walking routes are between 8 and 24 km in length and are graded by difficulty, ranging from easy valley walks to difficult ascents of the high peaks. The walks cover the areas of Cangas de Onis, Cabrales, Liebana, Valdeon and Sajambre. Alongside detailed route descriptions and 1:50k mapping, there is plenty of information on potential bases, manned refuges, local transport and facilities along the routes. There are also background notes on the area's rich geology, plants and wildlife. Spain's first national park, the Picos de Europa feature striking karst landscapes of jagged peaks and deeply incised gorges. However, there are also beech woods and picturesque alpine lakes, and the diverse landscapes support a wide variety of plants, wildlife and birdlife. The walks showcase many of the region's highlights, including its high peaks, the Covadonga lakes and the breathtaking Cares Gorge. The landscape of the Picos is widely considered the jewel in Spain's mountainous crown.