The best hiking routes in Otteröns naturreservat

Otteröns naturreservat, located on an island off the Bohuslän coast, offers a distinct contrast between its exposed granite shores and its sheltered, surprisingly lush interior. Walkers will find that the western side of the island is dominated by bare, wind-swept rocks and shingle fields, while the eastern side features fertile soils over shell banks, supporting dense deciduous woodlands and rich meadows. This geological divide means you can transition from open coastal rock to shaded paths under ancient oaks within a short walk.

Underfoot, the terrain varies from uneven, rocky scrambles along the shorelines to softer, grassy paths through the interior valleys. While there are no high cliffs or dramatic peaks, the rocky sections require careful stepping, particularly where the granite has been polished smooth by the sea. Marked trails guide you through the different zones, but some of the coastal sections demand a bit of scrambling over loose stones and boulders.

In June, the shell-rich soils in the sheltered meadows produce a dense carpet of wildflowers, including several species of orchids, which distinguishes this island from the more barren, acidic heaths of the mainland. The island is accessible only by boat, meaning the trails are generally quieter than those on the connected peninsula, though the natural harbors can attract boaters during the peak summer weeks.