Hiking & nature

UNESCO Biosphere Tour

Karst walk on the Schrattenfluh with cave expedition

Join the adventure! Discover the Teufelsspuren (literally the “Devil’s Marks”, deep grooves in the limestone) and climb down a long ladder into the cave known as the Silwängenhöhle. Once you’ve arrived in the mysterious underground world, you’ll be able to find unique dripstone formations and colourful walls of rock. The UNESCO Biosphere also offers courses, excursions and adventures on a variety of topics related to the UNESCO World Heritage Biosphere Reserve at Entlebuch. From cooking with wild herbs to the Alpine horn and from wood sculpting to baking rye bread, there’s something to satisfy every taste.

You can travel directly on public transport from Bern and Lucerne to Schüpfheim and then onward by bus to Sörenberg.


Karst and cave excursion

  • Circular walk over sharp-edged limestone rocks; hiking boots and steady footing required
  • Meeting point: 9.15 hours Sörenberg Tourist Office.

  • Duration: approx. 6 hours, including approx. 3.5 hours’ walking (500 m ascent)

  • End of the excursion (Wagliseichnubel): at approx. 15.00 hours 

  • Equipment: hiking boots, rainwear, warm clothing for the cave visit, packed lunch and drinks
  • Tour led by Pius Schnider or Armin Thalmann, karst limestone and cave guides

Availability Available on 09.10.2022

Karst and cave excursion

Friday, 8 July 2022
Tuesday, 27 July 2022
Sunday, 7 August 2022
Wednesday, 17 August 2022
Saturday, 10 September 2022
Saturday, 1 October 2022
Sunday, 9 October 2022 


Subject to change without prior notice


Karst and cave excursion

  • CHF 22.00 Children from 8 up to 16 years
  • CHF 35.00 Adults
  • CHF 70.00 Families max 2 adults and 3 children

For groups (of 10 or more people), a customised offer is available on request 

Prices in CHF incl. VAT / Prices and products subject to alteration.

BLS suggestion

Other exciting biosphere excursions

Between May and October the biosphere guides can offer you more than 15 different excursions to see the most beautiful corners of the Entlebuch region. Be it in the stream bed as a “nature painter” with green algae, accompanying the hunter and gamekeeper, or watching nature’s pilot, the bat, at night – the world of exploration in the Entlebuch region captivates its guests with a unique variety of natural gems..

How to get there

Travel comfortably by train to Schüpfheim. Continue by postbus to "Sörenberg, post".

Weather & webcam Today: fair weather 5/13°

Today fair weather 5/13°
Tomorrow fair weather 3/17°
Thursday fair weather 5/16°
Friday fair weather 5/15°

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