If you want to go to Lake Titicaca, you'll have to visit this mountain range
[DOC] [TLE] 8 Day Tour to Cusco & Machu Picchu, Puno & Lake Titicaca [PAR] Machu Picchu, Cusco, Sacred Valley, Puno & Lake Titicaca ... You'll also sail to 
Taquile Island, where you'll see more Inca ruins and get fantastic ... at your 
leisure, which still boasts mountain water coursing through Inca-built gutters in 
the center ...