Trail of San Martín Cave and Tera Canyon

This challenging hike typically takes around 5 hours and 50 minutes to complete. However, your actual duration may vary depending on your pace, stops for photos, and breaks.

Komoot rates this route as 'difficult'. It involves significant elevation gain and varied terrain, including ascents through oak forests and sections with large stone stairs. Hikers should be prepared for a strenuous outing.

The trail features diverse terrain, including ascents through oak forests, sections with large stone stairs, and paths alongside rock formations sculpted by water. You'll encounter numerous lagoons and waterfalls, all set within a landscape shaped by Quaternary glaciations, resulting in deep ravines and rounded heights. Some areas may be slippery or flooded, especially during autumn and rainy periods.

The route typically begins in Ribadelago Viejo, a village within the Sanabria Lake Natural Park. While specific parking details aren't provided, Ribadelago Viejo serves as a common starting point for trails in the area, so parking options are generally available nearby.

Along the route, you'll encounter several notable points of interest. These include the Viewpoint of Lake Sanabria, the picturesque San Martín Cave (a valley with a lagoon and waterfall, not a traditional cave), and sections of the stunning Cañón del Río Tera. The landscape is rich with glacial formations, lagoons, and waterfalls.

While specific regulations for dogs on this exact trail are not detailed, trails within the Parque Natural Lago de Sanabria y Sierras Segundera y de Porto generally allow dogs. It is always recommended to keep your dog on a leash to protect local wildlife and ensure the safety of other hikers.

The trail can be enjoyed during various seasons, but autumn offers vibrant colors from the oak forests and other flora. However, be aware that during autumn and rainy periods, some areas may be slippery or flooded, requiring extra caution. Spring and summer also provide pleasant conditions, though summer can be warmer.

Generally, there are no entrance fees or specific permits required for hiking within the Parque Natural Lago de Sanabria y Sierras Segundera y de Porto. However, it's always advisable to check the official park website for any updated regulations or specific requirements, especially for larger groups or during peak seasons.

The area is rich in biodiversity. You might spot flora such as oaks, heather, brooms, and hollies. For fauna, keep an eye out for the Iberian wolf, Pyrenean desman, and various birds of prey, including the golden eagle, which inhabit the park.

Yes, the route covers significant portions of the 'Senda de la Cueva de San Martín y Cañón del Tera' and also passes through sections of the 'Camino Tradicional La Cueva - San Martín' and 'Senda de los Monjes'.

Given the 'difficult' rating and varied terrain, it's essential to wear sturdy mountain boots for good ankle support and grip. Comfortable clothing suitable for hiking is recommended. During autumn or rainy periods, be prepared for potentially slippery or flooded sections. Always carry enough water, snacks, and navigation tools.