On the border with Chile, Cerro Tronador hides the Ventisquero Negro: a glacier covered in dark sediment that cascades down into the Patagonian forest. A full-day excursion from Bariloche you won’t forget.
Cerro Tronador and Ventisquero Negro: where the ice meets the forest
Cerro Tronador is an extinct volcano reaching 3,478 meters on the border between Argentina and Chile. Its name means “the thunderer”, and it comes from the sound ice blocks make as they break off and fall. No explanation needed: when you’re there, you hear it.
The Ventisquero Negro
The main attraction is the Ventisquero Negro: a glacier that descends coated in rock and earth sediment, giving it a dark grey, almost black color. It rises several stories high and ends cascading down into the green forest below. One of the strangest and most beautiful natural phenomena in Patagonia.
From the parking area, a short 20-minute walk reaches the viewpoint, accessible for all visitors. Those who want more can take more demanding trails that offer different angles of the glacier.
Practical information
Duration: Full day from Bariloche (roughly 8 to 10 hours including transfers and the walk to the viewpoint).
National park: The route is inside Nahuel Huapi National Park. Park entry fee applies.
Season: The excursion runs from October to April, when the road is open. In winter, access may be blocked by snow. It does not operate during ski season.
Activities: Walk to the viewpoint (suitable for all), higher-level hiking on the mountain trails, and Patagonian wildlife spotting along the way.
Getting there: Organized excursion from Bariloche or private car. The last stretch is gravel road: take it slow.
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