Visitors seeking a destination full of natural wonders and virtually untouched by travelers will rejoice at the remote setting of this broad valley famed for its unusual geological features. The 65km-long Valle de los Volcanes is carpeted with lava flows from which rise many small (up to 200m high) cinder cones, some 80 in total, aligned along a major fissure, with each cone formed from a single eruption.
The valley surrounds the village of Andagua, near the snowy summit of Coropuna, a good base for hiking to the top of the perfectly conical twin volcanoes or to a nearby mirador (lookout) at 3800m. Also on offer are the 40m-high Izanquillay falls, formed where the Río Andahua runs through a narrow lava canyon to the northeast of town. There are some chullpas (funerary towers) at Soporo, a two-hour hike to the south of Andagua, passing ruins of pre-Columbian city Antaymarca.