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La Presa de Isbert

  • Author: Eric Dengler

Presa de Isbert

This walk goes from Fontilles, via a 100 meter long tunnel to the useless dam, La Presa de Isbert. Then we walk along the barranc de l'infern towards Ebro. We return to our starting point via the riverbed of the barranc de Fontilles and the leper center of Fontilles.

Distance: 8 km

Time: 3h00.

Grade: Moderate.

Type: Circular.

Gps Track: Yes.

Route description: Yes.

Wheelchair: Not suitable.

Dog: Allowed.

Height gain: 430 meters.

Trail: Paved and unpaved.

Marking: Partly signs.

Hiking shoes recommended.


Sanatorio San Francisco de Borja.

La Presa de Isbert, a totally useless dam designed at the end of the nineteenth century, was built between 1928 and 1944. However, it was useless due to the water permeability of the calcareous soil. The short tunnel (100m) that we pass along the way was used as a shorter connecting route to the dam. There is no lighting and in wet weather there may be large puddles of water. Fontilles is a former leper center (since 1902) and is now, as “Sanatorio San Francisco de Borja”, a rehabilitation center and geriatric nursing home. The walls surrounding the domain are 3513 meters long and three meters high and are still clearly visible.


Download PDF for map and route description.

Bring a flashlight.

Map & Poi's.