Duration: Approximately 3.5 to 4 hours of narrated hiking Distance: 10 km (one way, Bruelisau to Hoher Kasten, with geological trail) Elevation Gain: 910 m ascent (walking up) or minimal (cable car up, walk down) Starting Elevation: 922 m (Bruelisau) or 1,794 m (Hoher Kasten summit station) Ending Elevation: 1,794 m (Hoher Kasten) or 922 m (Bruelisau) Difficulty: T2 (moderate mountain hiking) Best Season: May to November GPS Start (Bruelisau): 47.3085N, 9.4570E GPS Hoher Kasten: 47.2790N, 9.4820E
Introduction
Welcome to the Hoher Kasten, the premier viewpoint of the Alpstein massif in the canton of Appenzell Innerrhoden. This mountain, rising to 1,794 metres, offers one of the most comprehensive panoramas in eastern Switzerland, encompassing six countries on clear days, and its geological trail is one of the finest outdoor classrooms in the Alps.
Appenzell is a region apart. The two half-cantons of Appenzell Innerrhoden and Appenzell Ausserrhoden are the smallest in Switzerland, and Innerrhoden, with a population of just 16,000, is the least populous. Yet its cultural identity is vivid and fiercely maintained. Appenzell Innerrhoden still holds its annual Landsgemeinde, an open-air parliament where citizens vote by show of hand, one of the last surviving examples of direct democracy in its most literal form.
The Alpstein massif, of which Hoher Kasten is the easternmost peak, is a compact but dramatic mountain range. Its highest peak, the Saentis at 2,502 metres, is one of the most prominent summits in northern Switzerland. The range is a geological treasure chest, with spectacularly exposed rock strata that tell the story of 100 million years of Earth history. Despite its modest elevations compared to the high Alps, the Alpstein is a rugged, complex mountain world with steep limestone cliffs, deep valleys, and a network of trails and huts that offers some of the finest hiking in eastern Switzerland.
The region's cultural richness matches its natural beauty. Appenzell is famous for its folk art, its traditional costumes, its yodelling, and its distinctive painted houses. The Appenzell Innerrhoden Landsgemeinde, the open-air parliament still held annually, is one of the last surviving examples of direct democracy in its purest form, a living link to the political traditions of medieval Switzerland.
This audio guide covers the hike from Bruelisau up to the Hoher Kasten summit. You can also take the cable car to the summit and walk down, which is easier on the legs. Either way, the geological trail on the upper mountain and the revolving restaurant at the summit are highlights.
Practical notes: Wear good hiking boots with ankle support. The trail is well-marked but includes some steep sections. Carry water, food, and rain gear. The summit can be cold and windy even on warm days.
Waypoint 1: Bruelisau (922 m)
GPS: 47.3085N, 9.4570E
Bruelisau is a small village in the Appenzell Innerrhoden countryside, surrounded by the rolling green hills and traditional farmhouses that characterise this region. The farmhouses here are distinctive: large, wooden structures with broad, low-pitched roofs and facades often painted with colourful scenes of pastoral life, alpine herbs, or historical events.
Appenzell Innerrhoden remained Catholic during the Reformation, while Ausserrhoden became Protestant, a division that persists to this day and explains many of the cultural differences between the two half-cantons. Innerrhoden is more traditional, more rural, and more conservative. The annual Landsgemeinde, held on the last Sunday of April in the town square of Appenzell, is its most visible tradition: citizens gather in traditional dress, men carrying ceremonial swords, to vote on laws and elect officials by raising their hands.
The path from Bruelisau to Hoher Kasten begins at the cable car station and heads south through meadows and forest. Follow the yellow hiking signs toward "Hoher Kasten."
The meadows around Bruelisau are a showcase of Appenzell farming. The region is famous for its cheese, Appenzeller, a semi-hard cheese with a distinctive herbal flavour derived from a secret brine recipe involving herbs, spices, wine, and other ingredients. The recipe has been a closely guarded secret for over 700 years, known to only a handful of people at any given time.
Next waypoint: 1.5 km, approximately 30 minutes.
Waypoint 2: The Forest Zone (1,100 m)
GPS: 47.3020N, 9.4620E
The trail enters a mixed forest of spruce, beech, and maple, climbing steadily. The forest floor is rich with mosses and ferns, and the air is cool and fragrant with the scent of evergreen needles and damp earth.
The Alpstein massif is a miniature mountain world within the larger Swiss Alpine landscape. Despite its modest elevations, the Alpstein has alpine character: steep rock faces, karst landscapes, small glaciers on the Saentis, and a network of mountain trails and huts. The range is built from Cretaceous and Tertiary limestone, folded and thrust into complex structures that are spectacularly exposed on the cliff faces.
The forest here is home to a variety of bird species. Listen for the fluty song of the blackbird, the sharp call of the great spotted woodpecker, and the thin, high notes of the goldcrest, Europe's smallest bird. In spring, the forest is alive with the songs of migrant warblers: chiffchaffs, willow warblers, and blackcaps.
As you climb, the forest gradually transitions from broadleaf dominance at lower elevations to conifer dominance higher up. This transition reflects the decreasing temperature with altitude and the shorter growing season at higher elevations.
Next waypoint: 2.0 km, approximately 45 minutes.
Waypoint 3: Alp Rostein Area (1,350 m)
GPS: 47.2940N, 9.4680E
Emerging from the forest, you enter alpine pasture land. The views open dramatically, with the Alpstein ridge visible above and the Rhine Valley stretching away to the east.
The Rhine Valley, visible as a wide, flat trough to the east, forms the border between Switzerland and Liechtenstein, then Switzerland and Austria. On clear days, you can see across the valley to the mountains of Vorarlberg in Austria and the peaks of Liechtenstein. The flat valley floor, now intensively farmed, was once a vast lake that gradually filled with sediment from the Rhine and its tributaries.
The alp pastures here are grazed by cattle and the Appenzell goat, a distinctive breed with long, flowing white hair and no horns. Appenzell goats produce milk used for local cheese and are also kept for their ornamental value. The annual Alpfahrt, when the cattle and goats are driven up to the summer pastures, is a major festival in Appenzell, with decorated animals, traditional costumes, and music.
Look for the distinctive Appenzell herding dogs, a variety of the Appenzeller Sennenhund, a sturdy, tricoloured breed developed specifically for working on the steep, irregular terrain of the Alpstein. These dogs are energetic, intelligent, and famously loyal. The Sennenhund is one of four Swiss mountain dog breeds, all of which are tricoloured, and it is the most agile of the four, reflecting the steep terrain for which it was bred.
Next waypoint: 1.5 km, approximately 35 minutes.
Waypoint 4: The Geological Trail Begins (1,500 m)
GPS: 47.2880N, 9.4740E
You have reached the start of the Hoher Kasten Geological Trail, one of the finest educational hiking trails in Switzerland. Over the next 2 kilometres and 300 metres of climbing, you will walk through 100 million years of Earth history, with information panels at key points explaining the rock formations you are passing through.
The geological trail was established in cooperation with the University of Zurich and uses the spectacularly exposed rock strata of Hoher Kasten's flanks as a natural textbook. The layers here are tilted nearly vertical, so walking up the trail is like walking through geological time, from the oldest rocks at the bottom to the youngest at the top.
The oldest rocks you will encounter on the trail are Schrattenkalk, a hard, white Cretaceous limestone formed roughly 120 million years ago in a warm, shallow sea. This is the same limestone that forms the summit of Mount Pilatus in central Switzerland. It is characterised by its purity, its hardness, and its abundance of rudist fossils.
As you climb, look at the rock faces beside the trail. The layering is clearly visible, with beds of varying thickness, colour, and hardness stacked upon one another. Some beds are packed with fossils; others are barren. Some are hard and form prominent ribs; others are soft and have weathered back into recesses. Each layer tells a story of a different moment in the history of the Tethys Sea.
Next waypoint: 800 m, approximately 25 minutes.
Waypoint 5: The Cretaceous Sequence (1,600 m)
GPS: 47.2840N, 9.4770E
The trail now passes through the full Cretaceous sequence, from the Lower Cretaceous Schrattenkalk through the Upper Cretaceous Seewer Kalk. The information panels identify the key formations and their ages.
One of the most significant boundaries in the sequence is the transition from shallow-water limestone to deeper-water marls, reflecting a rise in sea level during the Late Cretaceous. This transgression, caused by tectonic and climatic factors, drowned the shallow shelf where the Schrattenkalk had been deposited and replaced it with deeper, muddier conditions.
The fossils change across this boundary. The shallow-water limestones contain rudists, reef-building bivalves that were the ecological equivalent of modern corals. Above the boundary, in the deeper-water sediments, you find planktonic foraminifera, tiny single-celled organisms that lived in the open ocean. The shift from benthic to planktonic organisms reflects the deepening of the sea.
This exposed sequence is of international scientific significance. Geologists from universities across Europe use the Hoher Kasten as a field excursion site, and the rock faces here have been studied and published in dozens of academic papers.
Next waypoint: 800 m, approximately 25 minutes.
Waypoint 6: The Summit Ridge (1,750 m)
GPS: 47.2810N, 9.4800E
The trail reaches the summit ridge of Hoher Kasten, and the views explode in every direction. To the west, the Alpstein massif stretches toward the Saentis, its highest peak. To the east, the Rhine Valley and the mountains of Austria and Liechtenstein form a sweeping panorama. To the south, on clear days, the peaks of the Graubuenden Alps, including the Piz Bernina, the only 4,000-metre peak in the eastern Alps, are visible over 100 kilometres away.
The ridge is the crest of a geological fold, an anticline formed by the compression of the rock during the Alpine orogeny. You are standing on the hinge of the fold, with the rock layers dipping away steeply on both sides. This structure is clearly visible in the cliff faces flanking the ridge.
The summit area is also notable for its flora. The exposed, windswept ridge supports a community of specialised plants, including several species of saxifrage, the cushion-forming Androsace helvetica (one of the rarest plants in the Alpstein), and the showy alpine clematis in sheltered crevices.
The revolving restaurant and summit station are now visible ahead.
Next waypoint: 400 m, approximately 10 minutes.
Waypoint 7: Hoher Kasten Summit (1,794 m)
GPS: 47.2790N, 9.4820E
You are standing on the summit of Hoher Kasten, 1,794 metres above sea level. The revolving restaurant, opened in 2009, completes a full rotation in approximately 45 minutes, presenting a continuously changing panorama as you dine or drink.
The view from Hoher Kasten encompasses six countries on the clearest days: Switzerland, Liechtenstein, Austria, Germany, France, and Italy. The Bodensee, Lake Constance, is visible to the north, one of Europe's largest lakes, shared by Germany, Austria, and Switzerland. The flat agricultural plain of the Rhine Valley, one of the most productive in Switzerland, stretches below to the east.
To the south, the Alpstein massif displays its rugged profile: the twin lakes of Seealpsee and Faelensee are nestled in deep valleys between steep rock walls, and the Saentis summit, crowned by its meteorological station and telecommunications tower, rises above the range's interior.
The Seealpsee, visible from the Hoher Kasten, is one of the most photographed mountain lakes in eastern Switzerland. Its setting, in a deep cirque surrounded by limestone cliffs, is reminiscent of the great lakes of the Bernese Oberland.
The revolving restaurant serves Appenzell specialities, including the local cheese in various preparations, Appenzeller Biberli (a honey-filled gingerbread), and local wines and beers. The Appenzeller brewery, one of the few independent breweries remaining in Switzerland, produces a range of craft beers that are increasingly popular.
From the summit, you can look west into the heart of the Alpstein massif. The network of trails and mountain huts that criss-cross the range offers some of the finest multi-day hiking in eastern Switzerland. The classic Alpstein traverse, from Hoher Kasten to the Saentis via the Rotsteinpass and several lakes, is a three-to-four-day journey through landscapes that rival the more famous trails of the Bernese Oberland.
The Seealpsee, visible from here as a dark oval in the valleys below, is a popular destination in its own right. Ringed by steep cliffs and accessible by a moderate trail from Wasserauen, the lake has two small guest houses on its shore where visitors can stay overnight, falling asleep to the sound of cowbells and waking to the reflection of the Saentis in the still morning water.
The Alpstein region is also significant for its cave systems. The karst limestone is riddled with caves and sinkholes, some of which have been explored to considerable depth. The Wildkirchli caves, accessible from the Ebenalp cable car station to the west, contain important Palaeolithic archaeological finds. Stone tools and animal bones discovered in the caves in the 1900s proved that Neanderthals inhabited this region roughly 50,000 years ago, making it one of the highest-elevation Neanderthal sites known in Europe. Today, the caves house a small chapel and a restaurant perched on the cliff face, accessible via walkways carved into the rock.
The folk traditions of Appenzell are among the richest in Switzerland. The Silvesterklaeusen, a New Year's celebration in the Ausserrhoden half-canton, features elaborately costumed figures visiting farmhouses and performing yodelling songs. The costumes fall into three categories, from the beautiful "schoene" to the wild "wueeschte," and their creation involves months of preparation. Though the festival takes place in winter, learning about this tradition enriches your understanding of the deep cultural roots of this region.
Closing
You have ascended one of the great viewpoints of eastern Switzerland and walked through 100 million years of Earth history on the way. The Hoher Kasten's geological trail, its revolving summit restaurant, and its six-country panorama make it one of the most complete mountain experiences in the Swiss Alps.
For your descent, you can take the cable car to Bruelisau in about 8 minutes. From Bruelisau, buses connect to the town of Appenzell in about 15 minutes.
The town of Appenzell itself is well worth a visit. Its pedestrian main street, lined with painted facades and traditional shops, is one of the most charming in Switzerland. The local museums document the rich folk culture of the region, including the tradition of decorative painting, the herding festivals, and the Landsgemeinde.
Thank you for hiking with ch.tours. May the panorama from the Hoher Kasten and the lessons of its ancient rocks enrich your understanding of this extraordinary corner of Switzerland. Safe travels.