Vadiello

Red conglomerate towers above a turquoise reservoir, Vadiello lies in the Sierra de Guara of Aragón in northern Spain, where a cluster of steep pillars and walls rises around a dammed lake in a remote, sun-drenched canyon better known to canyoners than to crowds of climbers.

The rock is conglomerate, pulling on embedded cobbles up vertical and overhanging faces, climbed as bolted sport on both single-pitch crags and longer multi-pitch routes. Grades cover a wide span from around 5 to hard 8s, with excellent concentrations of steep 6s and 7s. The celebrated Gran Diedro and the towers give committing, adventurous outings for those seeking length and exposure, and the pebble-pulling style rewards trust and calm as much as strength.

Isolation is part of the appeal: the approach ends at the reservoir, and the crags feel wild and quiet, shared mainly with vultures and the occasional canyoning party bound for the nearby gorges. Approaches vary from short walks to steep scrambles, and some routes see little traffic, so a degree of self-reliance and good route description are worthwhile.

Spring and autumn bring the best conditions, with mild temperatures and dry rock; summer is very hot in the exposed canyon, and winter can be climbable on sunny, calm days. There are no services at the crag, so the historic city of Huesca, half an hour away, is the practical base for food and lodging. Vadiello rewards climbers who like their conglomerate steep, sunny and gloriously uncrowded, well off the standard Spanish circuit.