Flatanger has been best known for sea eagle safaris and angling, but in recent times the world’s leading climbers have become aware of the area. Especially the giant climbing wall known as the Hanshelleren cave has become a popular climbing destination. The world’s most difficult route “Silence 9c” was first climbed here by Adam Ondra.

Hanshelleren – an unknown climbing paradise

Several of the world’s best climbers have already visited Strøm in Flatanger to climb what is referred to as one of the most difficult climbing routes in the world. The Hanshelleren cave is undergoing constant development as a climbing wall. There are already around 40 different routes here and plans are underway to bolt more climbing routes.  Plans are also underway to arrange international climbing competitions and make the place known internationally.

There are several climbing walls at Strøm, in addition to good opportunities for bouldering and traditional climbing. In total there are now 150 climbing routes in the Strøm area.

Unique place for rock climbing

Part of what makes Hanshelleren so unique is that the giant overhang means it never rains in the cave. Climbers always have rock that is dry and free from moss at their disposal when they wish to challenge their climbing abilities. The rock in the cave is granite, which ensures that climbers have hard, stable rock to work with when bolting and climbing routes.


The municipality of Flatanger is located in Namdalen in Trøndelag. It faces the notorious sea area Folla to the west and north. Flatanger contains around 1400 islands and islets and wonderful scenery.  This makes it a popular destination for people wanting to get away from the hustle and bustle of the towns and cities.

It is a three-hour drive from Trondheim to Flatanger. View a map of the route from Trondheim to Strøm in Flatanger, where the Hanshelleren cave is situated.