Starting from Bar Cenisio take the withe road on the left climbing in the wood, the slope will be constant and heavy 7/8% in a while you will reach the first Lake... then you'll meet other 2 small lakes before the Big One (Moncenisio Lake) very nice panorama and quite performing trip. Have a nice ride. Many opportunities to close different rings in the area. Ciao
Chose a good map of the area and bring always with you a rain jacket... in that place the weather change quickly...