Puerto Río Tranquilo (Marble Caves)
A small village on the Carretera Austral beside Lake General Carrera: take a boat into the swirling blue-and-white Marble Caves and hike on the Exploradores Glacier.
Puerto Río Tranquilo is a small village on the western shore of Lake General Carrera in Chile's Aysén Region, on the famous Carretera Austral, with a population of just a few hundred. Lake General Carrera, shared with Argentina, is South America's second-largest lake, and glacial sediment gives its water a dazzling turquoise color. The village is famous for the Marble Caves (Capillas de Mármol) in the lake and is also the gateway to the Exploradores Glacier and Laguna San Rafael. There are three main ways to explore: take a boat or kayak from the lakeshore at the edge of the village to tour the Marble Caves; head west along the Exploradores Valley road past Lago Tranquilo and the Nutria waterfall to the Exploradores Glacier viewpoint trail or a glacier trek, continuing seasonally to Laguna San Rafael; or follow the Carretera Austral south to Puerto Guadal, Lago Bertrand and the Baker River confluence, or north to Bahía Murta and Puerto Sánchez. Summer (Nov–Mar) is the best time to visit, with long days and relatively light winds, though the weather is changeable; winters are cold and some services close. It is about a 4–5-hour drive (about 220 km) from Coyhaique or Balmaceda airport, and long-distance buses also run. Plan on 2–3 days, with a spare day for bad weather. Banks and gas stations in the village are limited, so bring plenty of cash, fill up your tank in advance and book accommodation ahead.
Top sights
- Marble Caves (Capillas de Mármol) – Marble caves on General Carrera Lake, sculpted by the lake water over thousands of years. White, gray and blue striped walls reflect the tu…
- Exploradores Glacier – A valley glacier flowing down from the North Patagonian Icefield. Look out over its icy tongue and Cerro San Valentín from a viewing trail…
- Marble Caves – Marble caves carved by the lake water on General Carrera Lake. Blue-green water reflects against striped rock walls, creating a dreamlike s…
- Laguna San Rafael Glacier – A lagoon where the Northern Patagonian Ice Field meets the sea, filled with blue icebergs calved from the huge San Rafael Glacier. It is on…
- Cascada La Nutria (Exploradores Valley) – A tall waterfall beside the Carretera Exploradores, tumbling down from forested cliffs. It is the most common stop on the way to the glacie…
- Lake Tranquilo – A high mountain lake at the entrance to the Exploradores valley, surrounded by snowy peaks and forest. Its still water mirrors the mountain…
- Puerto Sánchez & Marble Caverns – A small fishing port on the north shore of General Carrera Lake. Nearby islands have marble caves, it is rarely visited, and there is an ol…
- Bahía Murta – A quiet village on the north shore of General Carrera Lake, where the bay mirrors the mountains. Remains of the old village and a wooden ch…
- Puerto Guadal – A small town on the southwest shore of General Carrera Lake, with lakeside beaches, orchards and quiet wooden guesthouses. It is another st…
- Puerto Bertrand & Lake Bertrand – A small village on the shores of the emerald Lago Bertrand, where the lake flows out to become the Baker River. It is a great spot for raft…
- Confluence of Baker and Neff Rivers – Where the Baker River, Chile’s largest by volume, meets the grey-white glacial waters of the Neff River. The turquoise and milky streams ru…
- Leones Glacier – A glacier on the eastern side of the Northern Patagonian Ice Field. You hike through forest and then cross Lake Leones by boat to reach the…
Where to eat
- Casa Bruja – Widely regarded as the town's most refined restaurant, serving Austral hake and lamb made with local ingredients. It ra…
- Cervecería Río Tranquilo – A craft beer bar on the Carretera Austral that serves Arisca beer brewed in town and thin-crust pizza, with views of th…
- La Nutria Café – A family-run café and campsite about 20 km along the Glaciar Exploradores road. Its homemade cakes and sandwiches rank…
Itineraries
- Carretera Austral & Caleta Tortel Loop – A self-drive loop starting and ending in Balmaceda, heading north to the hanging glacier and south to the wooden boardw…