Treja valley trail from Monte Gelato to Calcata

The route

The park's classic trail: 7 km, about three and a half hours and only 100 metres of ascent, difficulty E. It starts at Monte Gelato, in Mazzano Romano, just before the access barrier to the waterfalls, along the left bank of the Treja. It crosses fields, enters the forest beside the river, passes a wet area of springs and fords a stream. Halfway it climbs between stone terraces with the path cut into the tuff and, an hour and a half from the start, reaches Mazzano Romano. From there it goes down the Via del Lavatoio to the river, crosses a suspension bridge, passes a picnic area and the remains of the Faliscan temple of Monte Li Santi, and follows the Mola di Magliano ditch to a bridge and the climb to Calcata, beneath the rock and the village's ancient caves.

What you need to know

It is waymarked with the numbers 001, 002 and 014 and white and red flags, with a park hut at the start. Wear hiking footwear: there are narrow stretches high above the river. It is a linear route: leave a car at each end, or come back by the same way. The park's information sheet has the track in KML for your phone.