The declaration of the Alto Tajo Natural Park Historical milestone · Peralejos de las Truchas, Señorío de Molina, Guadalajara Image of Peralejos de las Truchas, not of the place itself. In the year 2000 the gorges of the Tajo and its tributaries were protected as a natural park, more than a hundred thousand hectares shared between Guadalajara and Cuenca. The designation covered the limestone canyons, the juniper woods and the timber towns of the river's headwaters. 2000 Photo: Diego Delso (CC BY-SA 4.0) What to see and do in Peralejos de las Truchas