Untamed Beauty: A Complete Guide to Hiking in the Sierra de Castril Natural Park

From the famous suspended gorge walk to the source of the river, discover the best trails in this Andalusian paradise.

Imagine stepping into a landscape often called the “Andalusian Grand Canyon” — a place where sheer limestone cliffs plunge into a river of impossible clarity, and Griffon vultures soar on thermal currents high above. This is the Sierra de Castril Natural Park, a hidden jewel of Andalusia and a hiker’s paradise waiting to be explored, nestled within the Geoparque de Granada, a UNESCO Global Geopark.

The Geopark’s diversity is what makes it so special: from Castril’s limestone gorges, the landscape shifts entirely as you head toward Gorafe, where the Desierto de Gorafe unfolds — an otherworldly badlands desert of eroded clay canyons, as good for a sunset walk as for the megalithic dolmens scattered across it.

As hosts (and lovers) of this incredible area, we’ve walked these paths countless times. Here is our personal guide to the best hikes the park has to offer.

Why Hike in the Sierra de Castril?

• The Famous Gorge: the park’s centrepiece, with a stunning suspended wooden footbridge built right into the cliff face.
• Crystal-Clear Water: the Río Castril is renowned for its purity and turquoise colour — perfect for a refreshing summer dip.
• Abundant Wildlife: Griffon vultures overhead, kingfishers by the river, and the chance to spot a Spanish ibex on the high peaks.
• A Sense of True Wilderness: relatively untouched by mass tourism, with a genuine feeling of peace and discovery.

1. The Must-Do: Sendero de la Cerrada del Río Castril

An easy, mostly flat trail (approx. 2.2km return) that delivers maximum scenic reward for minimal effort. From the old Mill (“El Molino”) in Castril, the trail leads to La Pasarela Colgante, the suspended wooden walkway hugging the cliffside just metres above the water, then through a narrow tunnel once used by maintenance workers of the old power station.

2. The Rewarding Climb: Sendero de la Magdalena

Incredible views without an all-day trek (approx. 2–3km, easy). The route climbs through forests of Aleppo pine, rewarding you with spectacular views of the gorge, and ends at a waterfall and pools of crystal-clear water.

3. The Epic Adventure: Nacimiento del Río Castril & Barranco de la Osa

For a true wilderness experience, follow the young river upstream to its source, where water emerges from beneath the rocks. Venture further onto the Barranco de la Osa (Bear’s Ravine) and you’ll pass the “Tejo milenario,” a yew tree said to be over a thousand years old, before descending past the ruined farmhouse “Cortijo de la Puerca” back to the river.

Know Before You Go

• Best time to visit: spring (April–June) and autumn (September–November).
• The gorge walkway can close after heavy rain — worth checking conditions locally.
• Bring sturdy shoes, at least 1.5 litres of water per person, sun cream and a hat.
• Start at the Visitor Centre by the main road for maps and trail conditions.

After a day exploring the Sierra, there’s nothing better than returning to a place of comfort and character — resting your legs by the pool at Cueva Ventica, or sipping local wine on the terrace of Villa Baja as the light fades over the mountains you just conquered.

• Sierra de Castril Visitor CentreStart here for maps & trail conditionsDirections ↗
• La Pasarela ColganteThe suspended footbridge trailheadDirections ↗
• Nacimiento del Río CastrilSource of the river, Barranco de la Osa trailDirections ↗
• Desierto de GorafeBadlands desert & megalithic dolmensDirections ↗