Waterfall of Robert Nature · La Pobla de Benifassà, El Baix Maestrat, Castellón Image of La Pobla de Benifassà, not of the place itself. A waterfall some 30 metres high in the ravine of the same name, between the village of Fredes and the Ulldecona reservoir, at the source of the River Sénia within the Tinença de Benifassà Nature Park. Photo: DagafeSQV (CC BY-SA 4.0) What to see and do in La Pobla de Benifassà