Although no mountain summits are included in this walk, this is a walking route to the south west of Pontresina that spans around seventeen miles and which takes you into the heart of the mountains. With the right weather conditions, you are guaranteed to see some stunning landscape scenery, including glaciers, towering rocky peaks, waterfalls, a rushing glacial river, coniferous forests and a large glacial lake at the head of the valley, the Lej da Vadret, located in the upper Roseg Valley and overlooked by snowy peaks interspersed with glaciers or large ice sheets.The walk has the advantage that, if you are staying in Pontresina, the start and finish points are right on your doorstep with no need for transport. It is a seven mile walk each way from Pontresina to the lake and back with an extra three miles added with a fairly steep ascent up onto a path that runs along a "balcony" about half way up the mountain before descending to return to the trail back down the valley.