The Portella Blanca d’Andorra or Coll d’Engaït (2515m) is a mountain pass where the boundaries of Andorra, Spain and France meet. It also forms the administrative boundary of Encamp , Lles de Cerdanya , and Porta. At the top of the pass there is border marker #427 which is taken to mark the tripoint. Portella Blanca with its border marker #247 is cited in the treaty as being the point where the 3 countries meet. Different maps have it about 220m south on small col between 2 hills. Maps, photos and a full report on both points here