Lake Thun + Beatus + Niederhorn
✓ Verified against the agency · SLFThe Lake Thun route: start at Interlaken West, boat or bus to St. Beatus Caves, continue to Beatenbucht, ride up through Beatenberg to the Niederhorn, then return by boat/bus through Spiez or Thun. The cave system has roughly 14km mapped, with 1km open for self-guided visits.
Safety classification
St. Beatus Caves are open year-round (constant 8–10 °C inside — bring warm layers). Lake Thun boats run spring–autumn with a reduced timetable into December. The Beatenbucht–Beatenberg funicular runs per schedule; the Beatenberg–Niederhorn gondola operates a summer season, and a maintenance closure of the gondola was flagged on niederhorn.ch in August 2026 — verify current operating status before travel. Summit ridge trails are snowbound roughly November–May; the transport-and-caves variant works year-round.
- ▲Cliff-edge exposure on the Niederhorn ridge trails toward Burgfeldstand/Gemmenalphorn — unfenced drops above the Justistal; the DMO describes 'spectacularly rugged cliff edges'
- ▲The walk-down options lose 830–1,369 m over 2–5.5 h — knee-heavy descents, not strolls; take the gondola down if unsure
- ▲Missing the last gondola descent strands you at 1,950 m — check last-descent times on arrival
- ▲Slippery wet steps inside and on the approach to the caves; pushchairs prohibited, sturdy footwear recommended by the operator
Day-hike rating is conservative and driven by the Niederhorn ridge walking; the boat + caves + lift-both-ways variant is an easy walk. The caves are a self-guided 1 km secured path. Niederhorn's exact 2026 season dates load dynamically on niederhorn.ch and could not be pinned — confirm the gondola is running (maintenance closure flagged Aug 2026) before selling this as a summit day.