The main ski resort , Vallnord , includes the Arinsal and Pal sectors , which jointly have 89 km of runs ranging in altitude from 2600 m to 1550 m . In summer , the main activities are hiking , climbing , mountain biking , 4x4 trails , and canyoning .
In summer , the main activities are hiking , climbing , mountain biking , 4x4 trails , and canyoning .