El Altar is perhaps the most technically demanding climb in Ecuador. December through February are the best months to attempt an ascent. Much more accessible is the hike to the lake within the caldera of the mountain. From Riobamba, one takes a bus for about an hour to Candelaria and then checks in at the ranger station, where nationals pay $2 and foreigners $10 to enter the Sangay park. About 4?7 hours of an extremely muddy trail (knee-high rubber boots are recommended) leaves one at the refuge belonging to Hacienda Releche, which can be rented for $12/night. The refuge has many beds, a kitchen, and even hot water. To hike to the lake is another 2 hours from the refuge across a valley and up a steep hill.
