Lake Tret, or Santa Maria, is an artificial lake and is located near the village of Tret, a hamlet of Fondo, in the north-eastern part of the Val di Non.
Starting from Villa Orso Grigio by Cristian Bertol, to reach the lake you can drive to the Scoiattolo refuge, in "Le Plaze di Tret", deviating from the main road towards Passo Palade at the "le Ciaspole" hotel.
Leave the car in the convenient car park and then continue on foot along path no. 512; with an altitude difference of 350 m and in about an hour's walk you will reach the lake. Near the lake there is a refuge and a mountain hut for refreshment.