Laguna Humantay sits at 4,200 meters in a glacial amphitheater beneath Salkantay, the second-highest peak in the Cusco region. Meltwater from the Humantay Glacier feeds the lake year-round, staining it an electric turquoise visible from the ridgeline trail two kilometers below.
The color derives from suspended glacial flour—microscopic rock particles ground by the glacier's movement and held in suspension by the lake's cold, still water. Local Quechua communities regard Humantay as an apu, a mountain deity deserving offerings of coca leaves and chicha before any ascent.
The laguna humantay tour route begins in Soraypampa, a high puna grassland at 3,900 meters reached by a three-hour drive from Cusco through the Mollepata District. From the trailhead, the path climbs 300 vertical meters over 1.5 kilometers, switchbacking through ichu grass and rocky scree. The gradient averages 20 percent, steep enough that most trekkers require 60 to 90 minutes to reach the lakeshore. Horses can be hired at Soraypampa for those struggling with the altitude, though riders must dismount for the final 200 meters where the trail narrows.
Humantay gained prominence in the mid-2010s as an alternative to the congested Inca Trail, drawing trekkers seeking high-altitude landscapes without multi-day permits. Daily visitor numbers now exceed 300 during the May-to-September dry season, prompting the introduction of a 30-sol conservation fee administered at the Mollepata checkpoint. The fee funds trail maintenance and waste removal, necessary work given the site's fragile alpine ecology. Morning departures between six and ten o'clock offer the clearest weather—afternoon winds frequently obscure the lake surface with whitecaps, and clouds roll in from the Amazon basin by early afternoon, reducing visibility to less than 50 meters. The trailhead remains accessible year-round, though January and February bring daily rain that turns the upper trail into ankle-deep mud.
The lake's turquoise intensity peaks in the dry months when glacial melt rates are highest and suspended sediment concentration reaches maximum density. Visitors who arrive after noon often find the color muted by shadow as Salkantay's western face blocks direct sunlight from the water. Photography is best before eleven o'clock when the sun illuminates both the lake surface and the surrounding névé fields without the harsh contrast of midday overhead light.
13 hr 30 min
