Lago Lácar is a stunning glacial lake nestled deep within the Andes mountain range in Neuquén Province, Argentina, sitting at an elevation of 630 meters (2,070 feet) above sea level. One of the most geographically remarkable lakes in the region, it holds the distinction of being the northernmost lake on the eastern side of the Andes that drains westward into the Pacific Ocean — doing so via the Huahum River, which flows through Huahum Pass into Chilean territory. The lake is enormous in both surface area and depth, covering 55 km² (21 square miles) with an average depth of 167 meters (548 feet) and a maximum depth of an impressive 277 meters (909 feet), giving it a total water volume of approximately 9.19 km³. Its catchment basin spans 1,048 km² (405 square miles), encompassing a largely wild and uninhabited mountainous landscape ranging from 1,600 to 1,900 meters in elevation. The only significant settlement on the lake is the charming resort town of San Martín de los Andes, situated on the northeastern shore. The surrounding terrain is characterized by lush Valdivian native forests, dramatic Andean peaks, and pristine clear waters — making Lago Lácar not only a world-class fishing destination but one of the most scenic lakes in all of Patagonia.