Best caves around Innertkirchen are primarily found within the region's dramatic gorges, offering unique cave-like experiences rather than traditional stalactite systems. Innertkirchen, located in the Bernese Oberland, is known for its impressive geological formations carved by rivers. These include accessible tunnels and grottoes within deep gorges, as well as glacier caves. The area provides opportunities to explore natural wonders and historical underground structures.
Last updated: October 3, 2026
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As long as it's still possible, you should visit the glacier.
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Underground cavern from WWII This military installation with two caverns was built at the end of 1940. The larger cavern was to be used as a dormitory for 185 officers and soldiers. All the technical equipment was installed in the smaller cavern. Offices, recreation room and dining rooms were installed in a stationery train in the tunnel. It is not known why, but the installations were never used and still exist, hidden and unused in the Kirchet cliffs. One of the few visitors to the instaliation reported: „The caverns were very luxurious for me: wooden lined walls, heating, running water, flushing toilets, electric lighting ... "
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The Rhone Glacier (sometimes also called Rotten Glacier) is a valley glacier in the source area of the Rhone in the extreme northeast of the canton of Valais in the central Alps of Switzerland. It is almost eight kilometers long, has an average width of about two kilometers and covers an area of about 15 km². The glacier was a major tourist attraction, especially in the 19th and early 20th centuries, due to its tongue, which at that time still extended far down into the valley near Gletsch.
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Be careful at the entrance where you go from the rubber mat to the ice. I almost fell. I thought the frozen stuffed animals were funny. Nice atmosphere with the blue twilight.
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Well, there is not much left of the glacier cave. We visited the cave for the first time in 2017 and are shocked today at what is left of it. The piece of ice in which the cave is located no longer has any contact with the glacier and the second piece covered with fleece also has almost no contact with the Rhone glacier. The glacier cave is the reflection of the Rhone glacier in the future.
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A glacier educational trail leads through the picturesque high mountain scenery along the glacier lake to the ice grotto near the glacier tongue. For almost 200 years, this has been carved into the glacier practically every year and inside you can experience a "blue miracle" because the grotto shines in a wonderful blue light. Despite the enormous melting of the glacier, the Rhone Glacier is still almost 9 km long and up to 200 m thick. The glacier movement at the level of the ice grotto in the tongue area is 30 - 40 m annually or up to 10 cm per day; nowhere else in Europe can you get as close to a glacier as in the ice grotto in the Rhone Glacier.
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The entrance area with ticket office and souvenir shop is the entrance to the Belvédère ice grotto and the Rhone Glacier. The grotto has been carved into the ice here every year since 1870 - at 2300 m above sea level you can experience the Rhone Glacier up close.
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Glacier Grotto, Titlis It feels like you are traveling back in time: in the turquoise-blue twilight of the glacier grotto, where the ice, which is up to 5000 years old, freezes the air we breathe into clouds of mist, the mighty heart of the glacier beats. On the 150-meter-long path 10 meters below the surface, you can feel it under your feet and touch it with your hands. An experience that will touch you in a profound way. Text / Source: Titlis Bergbahnen, Gerschnistrasse 12, 6390 Engelberg https://www.titlis.ch/de/aktivitaeten/gletschergrotte
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Innertkirchen offers unique cave-like experiences primarily within its dramatic gorges, rather than traditional stalactite systems. You can explore accessible tunnels and grottoes carved by rivers, as well as impressive glacier caves and historical underground structures.
Yes, you can visit the Titlis Glacier Cave, where a 150-meter-long path leads you 10 meters below the surface to experience ice up to 5000 years old at a constant -1.5 degrees Celsius. The Rhone Glacier also features an ice grotto, though conditions can be dynamic due to melting.
You can explore the Ice Cave, a historical site where blocks of ice were stored until the 1980s. Additionally, the World War II underground cavern in the Aare Gorge offers a glimpse into a military installation built in 1940, though it was never used.
Many attractions are family-friendly. The Aare Gorge, with its well-maintained footbridges and tunnels, is easily accessible for most visitors, and the path between the west entrance and the middle is even wheelchair and stroller friendly. The Titlis Glacier Cave and the Natural Tunnel in the Aas Gorge are also popular choices for families.
The Aare Gorge is particularly accessible. Its entire length can be explored via well-maintained footbridges and tunnels, and the path between the west entrance and the middle of the gorge is wheelchair and stroller friendly.
Exploring the Aare Gorge usually takes about 1 to 1.5 hours for the full 1.4-kilometer length. The Titlis Glacier Cave features a 150-meter path, which can be explored in a shorter time, typically 15-30 minutes. The Rosenlaui Glacier Gorge path is 573 meters long and can take around an hour to walk through.
You will encounter dramatic geological formations carved by rivers, including deep gorges with towering rock walls, natural tunnels, and grottoes. Glacier caves offer insights into ancient ice formations, while the Aare Gorge showcases spectacular limestone formations and roaring waters.
The Aare Gorge is open from April to November. During summer evenings, particularly on Fridays and Saturdays in July and August, the gorge is illuminated, creating a mystical ambiance. Glacier caves like the Titlis Glacier Cave are accessible year-round due to their constant internal temperatures.
Yes, many cave-like attractions are integrated into hiking routes. The Natural Tunnel in the Aas Gorge is part of a great hiking trail along the gorge. For more extensive options, you can find various running trails, cycling routes, and MTB trails around Innertkirchen that often pass by or near these natural wonders.
Visitors appreciate the unique natural beauty and the immersive experience of walking through tunnels and alongside powerful waters. The well-maintained paths and accessibility make these natural wonders enjoyable for a wide range of visitors, with the glacier caves offering a particularly profound connection to ancient ice.
The Aare Gorge is well-connected and can be reached by public transport, with entrances accessible from nearby train stations. For specific attractions like the Titlis Glacier Cave, cable cars typically provide access from mountain stations, which are usually reachable by public transport.
While the main gorges are popular, the region also features less-trafficked areas. The Rosenlaui Glacier Gorge, for instance, offers a more serene experience with its secured path through tunnels and grottoes, away from larger crowds. The historical World War II underground cavern in the Aare Gorge is also a unique, hidden historical site.


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