How much is a Second Class stamp? diltiazem cream over the counter We went on a very friendly group trip with Exodus for two weeks in 2006. As well as the trail, we spent time in Cuzco, on Lake Titicaca and in the Amazon rainforest. The passes are not killers if you have a competent guide who knows how to trek at altitude and the nights are not freezing if you have the appropriate sleeping bag. You camp above the cloud base and the stars blaze like lamps at night, the Inca signs of the Zodiac are clear to see and you could read a newspaper by the light of the full moon.