The alpine lake of Lago Roca is in the southern stretches of Los Glaciares National Park, overlooked by the icy peak of lofty Cerro Cristal.
The camping, trekking, fishing and climbing in these parts are legendary, including climbs to Cerro Cristal and the Moreno Glacier, and treks along the banks of Lake Roca.
The November to April fly-fishing season draws anglers to fish for rainbow trout and to watch the October spawning.
Lakeside estancias offer horseback riding tours and traditional asado barbecues, and birdwatchers come here to spot migrating waterbirds on the lake.
Lago Roca is 50km (31 miles) southwest of El Calafate, inside Los Glaciares National Park on the edge of Tierra del Fuego. The Perito Moreno Glacier is 60km (37 miles) away.