This guidebook describes the multi-pitch rock climbing at Montrebei (Mont Rebei) in the foothills of the Pyrenees near Pont de Suert. Montrebei is a spectacular gorge (the Congost de Mont Rebei) with the style of climbing being adventurous multi-pitch trad climbing at its best. The routes are up to 550m high on huge limestone walls, with many routes between 150m and 400m long. The Montrebei gorge is a natural dividing line between the Spanish regions of Catalunya and Aragon. Hence the guidebook is split into 2 sections, the Paret de Catalunya (walls of Catalunya) and Pared de Aragon (walls of Aragon). Crags covered by this guidebook include Agulla del Forat, Espero Espereste, Aguja de San Martin, el Gendarme, el Congost de Montrebei, Pared de los Moros, and la Muralla. All the routes are shown on detailed colour topos, with some routes also shown on colour photo topos. Each route has an overall French grade, plus a minimum obligatory grade. At the start of each section there is a crag location map. Published in October 2016, this guidebook is in Spanish text throughout. Number of pages is 416. Size is 141mm x 189mm. ISBN is 9788493952358.