Best attractions and places to see around Stausee Gigerwald, nestled in the Calfeisental valley, offer a blend of natural beauty, engineering, and cultural heritage. The region features impressive rock faces and the Gigerwald Dam, which impounds the Tamina River to form the Gigerwaldsee. Visitors can explore a historic Walser settlement and various natural features.
Last updated: July 6, 2026
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Gigerwaldsee, Calfeisental The Gigerwaldsee is located in the Calfeisental and lies above Vättis in the municipality of Pfäfers in the canton of St. Gallen. The elongated Gigerwald reservoir, which is enclosed between rock walls, is located at an altitude of 1335 meters above sea level, is around three kilometers long and 135 meters deep at its deepest point. The lake is fed by the Tamina, the Tellerbach, the Hochbach and other smaller mountain streams. The Tamina flows out of the Gigerwaldsee. The Gigerwaldsee is the largest lake located exclusively in the canton of St. Gallen. At the very back, at the western end of the lake, is the old Walser settlement of St. Martin. A partially tunneled road leads to the hamlet on the southern shore of the Gigerwaldsee. In the summer months there is an inn in St. Martin that offers food, drink and accommodation. Text / Source: schweizersee.ch https://www.schweizersee.ch/gigerwaldsee/
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Gigerwald Dam, Calfeisental Since 1976, the Tamina has been dammed with an arched dam to form the Gigerwaldsee. The dam is 147 meters high. The reservoir is operated by Kraftwerke Sarganserland AG, which is majority owned by Axpo. Text / Source: schweizersee.ch https://www.schweizersee.ch/gigerwaldsee/
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A magical place where the time just stops. A very nice place to see a old Swiss settlement.
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The end of a valley couldn't be much nicer, here you feel like you are in another world!
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The moment when you get up there is breathtaking! I'm not sure what I've seen more impressive than that. The water is sparkling blue, the small waterfalls that tumble in from the rock walls and the mini road on which the SUV driver already has problems with narrow tunnels. Just WOW!
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Very nice place with good food and accommodation options.
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Beautiful region for biking and hiking
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The region is characterized by the picturesque Calfeisental valley, with steep and rugged rock faces. The Gigerwald Dam impounds the Tamina River to form the elongated Gigerwaldsee, which is the largest lake exclusively in the canton of St. Gallen. You can also find small waterfalls tumbling from the rock walls into the reservoir.
Yes, you can visit the Historic Walser Settlement of Sankt Martin. This charming and wonderfully preserved village is located at the far end of the Gigerwaldsee and offers a restaurant and accommodation options.
The area offers various outdoor activities. You can find numerous hiking trails, including routes with views of the Piz Sardona and leading to the St. Martin Chapel. There are also cycling routes, such as the Gigerwald Reservoir Lakeside Road, and running trails.
Yes, the Gigerwald Dam is accessible for walking and driving, providing spectacular views of the reservoir and the valley. It stands 147 meters high and is 430 meters long. Guided tours of the dam and the Mapragg power plant are available upon request.
The Historic Walser Settlement of Sankt Martin is considered family-friendly. The Gigerwald Reservoir Lakeside Road is a relatively flat route, making it pleasant for leisurely drives or cycling with families, though caution is advised in the illuminated tunnels.
The Calfeisental offers a relatively easy ascent by road to the Gigerwald Dam, with approximately 400 meters of elevation gain on asphalt. From the dam, a partially tunneled road, the Gigerwald Reservoir Lakeside Road, leads to Sankt Martin. This road operates with one-way traffic, changing directions every 30 minutes during specific hourly windows.
Yes, the Historic Walser Settlement of Sankt Martin, located at the far end of the Gigerwaldsee, offers a restaurant and accommodation options. There is an inn in St. Martin that provides food, drink, and lodging during the summer months.
The Gigerwald Reservoir Lakeside Road runs along the reservoir and features four illuminated tunnels. It offers continuous beautiful views between the tunnels and is a relatively flat route, suitable for cycling or leisurely drives. Cyclists should use lights due to the dark, narrow tunnels.
Visitors appreciate the breathtaking views from the Gigerwald Dam, the sparkling blue water of the reservoir, and the small waterfalls. The wonderfully preserved Historic Walser Settlement of Sankt Martin with its good food and idyllic atmosphere is also highly rated.
Yes, the ascent through the lower Calfeisental to the Gigerwald Dam is quite easy, all on asphalt, with around 400 meters of elevation gain. This makes it suitable for both cycling and hiking.
Yes, there are hiking routes in the area that provide views of the Piz Sardona. For example, the 'View of Piz Sardona – St. Martin Chapel loop from Stausee Gigerwald' is a moderate 11.5 km hike, and the 'View Above the Tree Line – View of Piz Sardona loop from Stausee Gigerwald' is a more difficult 20.7 km option. You can find more details on Hiking around Stausee Gigerwald.


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