Premise: From Callosa take the Parcent road, follow it for 21?a2 km (11?a2 miles), and make a right-hand turn at the entrance to the El Algar waterfalls, a tumbling oasis beneath the massive Sierra Bernia formed by a tributary of the River Guadalest.

Hypothesis: It's been said that the Sierra Bernia is the only structure of its type in the world.
Relation: neutral