We rode two sections in the valley of Lamay just a short distance E of Calca. The first lap was a 715m descent in 7km starting from the village of Bisminay at 4200m and ending at the Sapacto trailhead at 3500m. The second lap was a 1000m descent in 9km from 4000m and ending at Lamay at 3000m (watch out villagers at Huama who have gated the road and may want bribes to lift the gate). We found out real quick that these huge descents are commonplace for Peruvians.