Sierra Blanca

The mountain behind Marbella is the reason the town has the climate it markets itself on. La Concha’s shell-shaped wall rises straight off the coast and blocks the weather that reaches the rest of Andalusia, and its banded grey-and-white face is Triassic carbonate rock turned to marble by the Alpine mountain-building that raised the Bétic ranges.

The range, not just the peak

Almost everyone means La Concha when they say Sierra Blanca, but the peak is not even the highest point. Cerro del Lastonar tops the range at around 1,275 metres, followed by Salto del Lobo at roughly 1,229 and then La Concha at 1,215, with Cruz de Juanar at 1,184. The geology is what gives the range its name. The rock belongs to the Alpujárride complex of the Bétic cordillera: a lower unit of schists and phyllites under a carbonate cover laid down in the Triassic, roughly 250 to 200 million years ago, and later metamorphosed into crystalline marble during the Alpine orogeny that folded these mountains up in the Cenozoic. It weathers into alternating grey and white strata that read like layers of a cake from the coast. It forms the southern tip of the Sierra de las Nieves and falls within the Sierra Blanca y Bermeja protection zone for birds.

The walk, and the rescues

The standard route to La Concha starts at the Refugio de Juanar above Ojén, roughly twenty minutes from Marbella, and runs about twelve to fourteen kilometres return with somewhere between 750 and 900 metres of ascent. Figures vary by source and by exactly where people turn round; four to six hours is realistic. It is also the mountain with the most rescues on this coast every year, and the reasons are consistent: from the beach it looks close and friendly, the Salto del Lobo and the chained section near the top are exposed, and summer heat is genuinely dangerous. Local authorities advise against it in high summer. There is a north-face variant that avoids the chains, which is the sensible option with children.

What lives up there

Holm oak, Aleppo pine, cork oak and Portuguese oak cover the lower slopes; Spanish ibex are common on the ridges, along with golden eagles and peregrine falcons. The range once supported a working economy that has entirely gone — charcoal from the oaks, talc, marble, iron and magnesium from small mines. At the Cruz de Juanar, near the summit ridge, stands a cross and a small chapel to the Virgen del Carmen, patron of sailors, connected to a story of fishermen caught in a storm with a useless compass who prayed their way back to shore.

Frequently asked questions