Ordesa Valley / Cola de Caballo
✓ Verified against the agency · AEMET / MFThe signature day hike of the Spanish Pyrenees. From Pradera de Ordesa (1,320m), the trail follows the Río Arazas through beech and pine forest along the flat valley floor, passing a chain of waterfalls — Cascada del Estrecho, Gradas de Soaso — before reaching the Cola de Caballo (Horsetail) waterfall at the head of the valley beneath the Monte Perdido massif. Moderate difficulty, well-marked, and jaw-dropping from start to finish.
Safety classification
Safe window: roughly June to October, when the valley trail is snow-free; in peak periods (Holy Week and summer) the park bans private cars beyond Torla and runs a shuttle bus to the Pradera every 15-20 minutes. Not safe: November to May, when snow and ice sit on the upper valley and the Soaso steps — that is winter-gear terrain, not this classification.
- ▲Snow and ice on the upper valley and the stone steps at the Gradas de Soaso outside the summer window