The Bèrnia Sierra runs straight inland from the coast between the town of Callosa d'En Sarrià and La Punta de Toix, with a sharp limestone crest reaching 1,129m. To the south of the summit are the remains of the Bèrnia Fort, built following orders from Felipe II (16th C) to command the area in case of possible rebellions by the Moriscos (Moors converted to Christianity) who populated the area and covered the slopes with terraces and stone walls, until their forcible removal in 1609. One recommendable walking route (typically signposted as a Short-Distance Hiking Route) leaves from Cases de Bèrnia (Xaló) along the northern face up to the Forat de Bèrnia, a spectacular natural tunnel through the crest. After crossing the tunnel, the return is made along the southern face, leading past the Fort. The excursion provides privileged panoramas over the bay of Altea.