At around midnight we start the ascent to the summit. The slopes have an average steepness of 30 – 40 degrees, with some icy sections of 45 degrees. After 5 - 6 hours we reach the Veintimillia Summit (6227 m. / 20.429 ft.) With good snow conditions, sufficient time, and if you still have enough energy, you can continue for 45 minutes to the Whymper summit (6263 m. / 20.548 ft.) The descent will take 3 – 4 hours, from 4800 transfer back to Riobamba