The 2026 Summer Season Is Underway

The 2026 summer season is underway! We welcome visitors from across Sweden and Europe to Siknäsfortet.

This summer our guides take visitors 40 meters into the mountain during fixed drop-in tours at 11:00, 12:00, 13:00, 14:00, and 15:00. Open dates: 6 June, 13-14 June, and 24 June-30 August.

No pre-booking is required during the open season for the fixed tour times. Tours do not start before, between, or after these times unless a special group visit has been arranged. Groups can contact us for visits outside the regular open season.

See you underground!