Lago Epuyén is located in the province of Chubut in Argentine Patagonia, stretching approximately 14 kilometers in length and surrounded by Andean peaks on all sides. The lake sits within the Reserva Forestal de Usos Múltiples Lago Epuyén, a protected area encompassing more than 30,000 hectares of forest and shoreline. It is considered one of the warmer and more transparent lakes in Patagonia, with water clarity reaching visibility depths of up to 30 meters.

Motorized navigation is prohibited on the lake, a regulation that preserves both water quality and the quiet character of the paddling environment. This makes it well suited to kayaking and other human-powered craft. The lake has two primary access points: Puerto Patriada on the northern shore, located near the town of El Hoyo, and Puerto Bonito on the southern shore, near the town of Epuyén. Puerto Patriada is the base for organized kayak excursions and can be reached by turning off Route 40 onto a dirt road, roughly a half hour's drive from El Bolson. The northern access offers a more open landscape and is commonly used for day paddling, camping, and extended time on the water.

From Puerto Patriada, paddlers can explore the lake's calm, glassy waters. A trail leading inland from the northern shore reaches a waterfall after approximately 20 minutes of walking, making it a natural stop during a day trip. The southern access at Puerto Bonito features calmer beaches, short hiking trails, natural viewpoints, and a site with rock paintings (pinturas rupestres).

The lake's waters are strikingly blue and highly transparent. Paddlers should be aware of the presence of leeches. The overall paddling experience is calm and quiet, consistent with the prohibition on motorized boats. Organized kayak day trips have been offered from Puerto Patriada, historically priced at around 1,800 ARS per person for a full day on the water, including a meal. The lake is accessible from El Bolson and is roughly a two-hour drive from Bariloche or 50 minutes from Esquel.