Humantay Lake, nestled high in the Peruvian Andes, is a stunning turquoise glacial lake renowned for its breathtaking scenery. The trek to the lake is challenging due to the high altitude (around 4,200 meters or 13,800 feet), making acclimatization crucial; accessibility is limited for individuals with mobility issues. It's generally recommended to visit with a guided tour, both for safety and logistical reasons (transportation, altitude sickness support). While open year-round, the dry season (May to September) offers the best weather conditions; the rainy season (November to March) can bring slippery trails and reduced visibility. The typical visit, including transportation from Cusco, lasts a full day. Costs vary depending on the tour operator but generally range from $50 to $100 USD per person, including transportation, meals, and entrance fees. Solo hiking is possible but not advisable due to the remote location and altitude challenges.