Skarpnäcksgrottan

Skarpnäcksgrottan is a natural cave near Lake Flaten featuring a main chamber with smaller passages branching off in different directions. Natural openings in the ceiling allow daylight to filter through the rock, illuminating the interior spaces.

The cave attracted notable visitors including painter Carl Larsson and writer Bjørnstjerne Bjørnson in the early 1900s. It was documented as a significant natural landmark and later received official recognition as a protected site.

The cave received recognition as natural monument number 185 in botanist Rutger Sernander's 1935 documentation of Stockholm's natural landmarks.

The cave is accessible via a footpath connecting two local roads and is relatively easy to reach on foot. Visitors should prepare for wet surfaces and dim lighting inside, wearing appropriate footwear for the terrain.

A sealed World War II storage facility lies within the adjacent mountain structure and remains inaccessible to visitors. This hidden wartime use represents an unexpected chapter in the site's past.

Location: Stockholm Municipality

GPS coordinates: 59.26087,18.15321

Latest update: December 14, 2025 14:21