Top 20 Natural Monuments around Onís

The region around Onís, nestled within the Picos de Europa National Park, offers several highly-rated natural monuments. Visitors particularly enjoy the dramatic Ruta del Cares, known for its spectacular gorge views and challenging trails. Another favorite is Lake Ercina, a serene glacial lake offering impressive mountain scenery and hiking opportunities. The Cares Gorge (Garganta Divina) itself is also highly appreciated for its trail carved into limestone, surrounded by mountains rising over 2,000 meters.

The best time to visit largely depends on the activity. For hiking and general exploration, spring and autumn offer pleasant temperatures and fewer crowds. Spring, in particular, is beautiful with less people and lingering snow on the mountains, as noted for Lake Ercina. Summer is popular but can be hot, especially in gorges like the Ruta del Cares, though it's ideal for cooling off in streams. Winter can bring snow, making some areas less accessible but offering unique, stark beauty.

Yes, Lake Ercina is categorized as family-friendly, offering beautiful scenery and opportunities for gentle walks around its pristine waters. While some trails in the region are challenging, areas around the Lakes of Covadonga provide more accessible options for families to enjoy the stunning mountain environment.

The region is rich in diverse geological features. You'll encounter dramatic gorges with towering limestone walls, such as the Cares Gorge and the Desfiladero de los Beyos, carved by the Sella River. Glacial lakes like Lake Ercina are prominent, along with impressive rock formations, deep valleys, and extensive karstic cave systems like the Sistema del Jitu, one of Asturias' largest.

Yes, the Cueva del Pindal, though located a bit further east in Ribadedeva, is a significant natural monument that combines natural beauty with ancient history. It's a UNESCO World Heritage site renowned for its well-preserved Paleolithic cave paintings, offering a unique opportunity to witness prehistoric art dating back thousands of years in its original context.

The natural monuments around Onís are perfect for outdoor enthusiasts. You can find numerous routes for various activities. For instance, there are challenging running trails like the "Lakes of Covadonga Circular Trail" or the "Ruta del Cares Trail." Cyclists can explore routes such as the "Lagos de Covadonga Trail" or the "Sella Bridge – San Antolín de Bedón Beach loop." You can find more details on these and other routes in the Running Trails around Onís, Road Cycling Routes around Onís, and Cycling around Onís guides.

While many trails in the Picos de Europa are challenging, areas around the Lakes of Covadonga, including Lake Ercina, offer more accessible paths suitable for beginners or those seeking easier walks. These provide stunning views without requiring extensive hiking experience. Some initial sections of the Ruta del Cares might also be manageable for less experienced hikers, though the full route is demanding.

Visitors consistently praise the spectacular views and the immersive natural experience. The Picos de Europa National Park, with its dramatic mountainous terrain, deep gorges, and lush valleys, is a major draw. The sheer scale and beauty of places like the Ruta del Cares and the serene environment of Lake Ercina are frequently highlighted. The opportunity to walk through ancient landscapes and witness unique geological formations is also a significant appeal.

While the Picos de Europa are well-known, the Sistema del Jitu offers a more specialized experience. Declared a Natural Monument, this vast karstic cave system within the Cornión Massif is one of Asturias' largest, with over 8 kilometers of mapped galleries. It's a prime location for speleology enthusiasts and those interested in unique subterranean ecosystems and fauna, including newly described species.

Yes, there are opportunities for wild swimming. For example, the Crystal-clear stream near the Cares River is noted as a spot where visitors can take a dip to cool off on hotter days. Always exercise caution, check local regulations, and be aware of water conditions and currents before entering any natural waters.

Parking availability varies by location. For popular spots like the Ruta del Cares, parking is often available at trailheads such as Poncebos, though it can fill up quickly during peak season. For the Lakes of Covadonga, access is often restricted to public transport (buses) during high season to protect the environment. The N-625 road winds through the Desfiladero de los Beyos, offering scenic views and roadside stops. It's advisable to check specific access and parking regulations for each monument before your visit, especially within the Picos de Europa National Park.