Canyoning is an extreme sport that is often practised in remote and rugged settings. The sport is particularly popular in the French and Spanish Pyrenees because of the numerous caves, potholes, gorges and unusual rock formations. The Spanish website www.barranquismo.net lists all of the caves in the region with weblinks provided for each. Canyoning is often more about fun than tough physical endurance, and is enjoyed worldwide by people of all ages and skills. If you are curious about canyoning, but aren’t ready to sign up to a club, Spanish Trails Adventure (www.spanish-trails.com) organises day trips.