In the very heart of the Aragonese Pyrenees, within Ordesa y Monte Perdido National Park, lies one of Spain’s most picturesque and iconic hiking trails. This place, where nature showcases its raw power and beauty, attracts thousands of travelers eager to experience the majesty of the mountains. The park, recognized as a UNESCO World Heritage Site, stands out for its harmonious blend of rugged cliffs, emerald valleys, dense forests, and crystal-clear rivers. Here, everyone can find a trail suited to their abilities, but one path has become a true legend and a must-visit destination.
The main trail to the ‘Horse’s Tail’ waterfall
This is the famous route to the ‘Cola de Caballo’ waterfall, which translates as ‘Horse’s Tail.’ The trail begins at the Pradera de Ordesa meadow and gently follows the course of the Araza River. The total distance is about 16 kilometers round-trip, making it perfect for a day hike. The elevation change is moderate, from 1,330 to 1,750 meters, so the trail doesn’t require any special mountaineering skills and is accessible to people of various fitness levels, including families with children. The route is part of the renowned Trans-Pyrenean trail GR-11 and is extremely well-marked, making it almost impossible to get lost. As you progress, you’re enveloped by the coolness of beech and fir forests, with the sound of the river constantly accompanying you and creating a sense of tranquility.
A cascade of waterfalls on the way to the goal
One of the main features of this route is that the final waterfall is far from the only wonder you’ll encounter. On the way to ‘Cola de Caballo,’ the trail passes several other equally impressive waterfalls. The first you’ll see are the Arripas Falls, followed by La Cueva and El Estrecho. Each has its own unique character and is well worth a stop for photos. But the true gem as you approach the finale is the Gradas de Soaso—a series of small, but incredibly scenic steps where water gently flows over stone terraces, creating a truly magical landscape. Once you’ve passed this section, the trail leads out to a wide glacial valley, at the end of which your ultimate destination comes into full view.
Options for beginners and pros
Ordesa National Park offers a wide range of hiking trails to suit every taste and fitness level. If a 16-kilometer trek sounds too long, you can choose shorter routes starting from Pradera de Ordesa. For example, the walk to the El Estrecho waterfall takes just about an hour and lets you enjoy stunning views with minimal effort. For experienced and seasoned hikers, there’s a more challenging option — the “Hunter’s Trail” (Senda de los Cazadores). This route features a steep, lengthy ascent to the Calcilarruego viewpoint, where you’re rewarded with breathtaking panoramic views of the entire valley. You can descend via the Faja de Pelay trail, making a circular route that takes around seven hours. This demanding trek requires solid physical fitness, but it offers unforgettable impressions.
Practical tips for travelers
The best times to visit this area are spring and autumn. In spring, the river is at its fullest after the snow melts, while in autumn, the deciduous forests turn vivid shades of gold and crimson, creating a unique palette. It’s important to note the specific access rules for starting the route. During peak tourist season (summer, Easter week, and certain holidays), private vehicles are not allowed to drive to Pradera de Ordesa. The park can be reached by a special bus that operates from the village of Torla. Outside these periods, private vehicles are permitted. Thanks to its accessibility, stunning scenery, and well-developed infrastructure, the hike to the ‘Horse’s Tail’ is considered a must-see in Huesca and is a true showcase of the natural beauty of the Aragonese Pyrenees.
