General
I will limit myself to the tour from and to Zernez railway station. Additional planning is required for any other descent (bus, hitchhiking, second car....). Both the ascent and the descent require perfect visibility and snow conditions (summit couloir 35° for 100 metres, the slopes into Val Sarsura 35-40°30-40 for 400 metres)
Ascent
To the south of Zernez railway station, you first pass the campsite and cross the Inn bridge before following the hiking trail to Alp Munt. From there, follow the path north-westwards through the forest to the signpost at La Plazza. From there, head south-west up the slope to the plateau at P.2366. From there, cross the ridge into Val Sparsa. Caution: safe conditions are required to traverse the mighty slope.
Next, head up to the two small lakes in the hollow. From there, head southwards to the summit ridge of Piz d'Urezza at P.2840. Now follow the east ridge to the summit, P.2905.