Bad Ragaz to Mapraggsee: Bridges, Waterfalls, Hot Springs & More - A Complete Tamina Gorge Hiking Guide
Having hiked this trail more than ten times over several years - in every season, in both directions, and along both flanks of the gorge - I have written this guide as a distillation of that firsthand experience.
My goal is to give you a comprehensive overview of the terrain, history, and key sights so that you can tailor and plan your own ideal day on the trail...
Tips for Planning Your Hike
Best Season: While the canyon is dramatic all year-round, autumn is undeniably the peak time to go. The turning foliage across the dense forest canopies, sheer limestone cliffs, and alpine terraces transforms the valley into a striking display of gold and crimson.
CRITICAL WINTER WARNING: The Tamina Gorge (between Bad Ragaz and Altes Bad Pfaefers) and the thermal cave tunnels are strictly closed during winter (typically from Nov. through April). Heavy snow accumulation on the rim creates severe objective hazards below, including thick snow and sheet ice on the path, fallen trees, freeze-thaw rockfall, and minor avalanche chutes spilling over the vertical cliffs. Never bypass path closures in winter. .
Direction & Bus Logistics: While this guide details the circuit starting in Bad Ragaz and working up to Mapraggsee, reversing the route (starting at Mapraggsee and hiking back toward Valens, Altes Bad Pfaefers, the Taminabrueckeb & Bad Ragaz) is often the most efficient option.
PostBus lines run regularly through the high terrace villages (Valens, Pfaefersl, Mapraggsee, etc ), but no public buses run inside the deep gorge itself between Altes Bad Pfaefers and Bad Ragaz. Starting at the Mapraggsee tour lets you handle your bus transfer first and spend the second half of your day descending into the gorge, finishing directly in Pfafers or Bad Ragaz at your own pace without watching the clock for a bus schedule.
Feature | Specification |
|---|---|
Start | Bad Ragaz, Post Office Bus Stop |
End | Mapraggsee Bus Stop (PostBus return) |
Distance | ~16.5 km (including side trips) |
Elevation Gain/Loss | ~750 m ascent / ~580 m descent |
Duration | 5 to 6 hours (excl. food & museum) |
Difficulty | T3 (Alpine Hiking sections) / T2 |
Stage 1: Bad Ragaz to Taminabruecke
Bad Ragaz & Thermal History
Stepping off the yellow PostBus at the Bad Ragaz Post Office bus stop, you land in a town shaped by its thermal hydrogeology. Originally a quiet farming village named Ragaz, its development shifted in 1242 following the discovery of mineral hot springs in the adjacent Tamina Gorge.
In 1840, engineers constructed a 4-km pipeline to deliver the 36.5 deg C thermal water down to the valley, turning the settlement into an international spa resort. Officially renamed Bad Ragaz in 1937, the town center also features open-air art installations from Bad RagARTz, a triennial sculpture exhibition. From 2017 to c.2023 they also held the Light Ragaz Sound & Light exhibition in the hot spring - see my other article...
Into the Lower Gorge
Leaving the town center, cross the Tobelbruecke, a historic stone arch bridge spanning the mouth of the Tamina River where it exits into the Rhine Valley. Entering the Tamina Gorge lower section, the limestone walls narrow rapidly. Along the riverbed, concrete flow controls and river weirs are installed to manage seasonal discharge and prevent flash flooding.
Note on Gorge Traffic & Shuttle Access:
The single-lane road through the lower gorge is governed by a strict public driving ban (Fahrverbot). The only vehicles permitted are the official seasonal Schluchtenbus (Gorge PostBus shuttle) and traditional horse-drawn carriages (Roesslipost), operating under tight, timed one-way direction slots between May and Oct.
This strict control means you will almost never encounter motorized traffic along the river road, making for a tranquil walk - though the shuttle provides a convenient shortcut or bailout option to or from Altes Bad Pfaefers if needed.
Further into the canyon stands a locked pipeline bridge. This enclosed structure acts as a protective conduit housing the pipeline that transports approximately 4,000 L/m of 36.5 deg C thermal water to Bad Ragaz.
Continuing upstream, the gorge path passes cascading waterfalls and rock alcoves where groundwater trickles over mossy cliff faces - making nice icicles at times.
Crossing the Taminabruecke
The trail then follows a path passing under the Taminabruecke, providing a direct view straight up at the concrete arch spanning 200 meters above the canyon floor. Just past this point lies a shaded gorge riverside BBQ picnic area equipped with seating beneath the canyon walls.
Immediately after the picnic area, turn right onto a steep, ascending track to climb the canyon wall and cross over the Taminabruecke from above.
Opened on June 22, 2017, to connect Pfaefers and Valens, this bridge suspends traffic and pedestrians 200 m above the gorge bed, making it Switzerland's highest arch bridge. Designed by Leonhardt, Andrae & Partner, the structure measures 417 m in total length with an asymmetrical concrete arch spanning 260 m. It received the 2018 Structural Award for engineering integration.
From the bridge deck, you get direct downward views into the chasm, along with vistas extending to Bad Ragaz, the Rhine Valley, and the 2,844-m summit of Pizol.
Stage 2: Pfaefers Terrace & Pracavaels Lake
Pfaefers Village & Abbey
Exiting the bridge deck onto the high terrace brings you into Pfaefers village and parish church. Originally recorded in early medieval Latin documents as Fabaria (meaning "bean field"), Pfaefers grew into a regional power center controlling access to the alpine Kunkels Pass trade route into Italy. Here stands the Catholic Parish Church of St. Maria. Because strict monastic rules barred lay villagers from worshipping inside the cloistered abbey, St. Maria was constructed specifically to serve the village community.
A short walk leads to Pfaefers Abbey (Kloster Pfaefers), a Benedictine monastery founded around 731 AD by Saint Pirmin. The abbey's monks held regional rights and first developed the thermal springs in 1242.
A catastrophic fire destroyed the original medieval monastery in 1665, leading to its reconstruction as the grand late-Baroque complex seen today. Following the abbey's dissolution in 1838, the historic buildings were converted in 1845 into the St. Pirminsberg psychiatric clinic, which still occupies the site today...
Wartenstein Ruins & Regional Landmarks
Continuing past the abbey grounds, the path reaches a Statue of Christ - a scaled replica of Rio de Janeiro's Cristo Redentor that was originally erected on the Guschakopf peak for Bad RagARTz before being permanently relocated near Wartenstein.
Further along the terrace stand the Wartenstein castle ruins (Burg Wartenstein), constructed around 1206 by Konrad von Zwiefalten at an elevation of 717 meters to serve as a lookout fortress over the Rhine Valley.
Adjacent to the ruins is St. George's Chapel (St. Georgenkapelle), a medieval chapel positioned along the trade route to offer sanctuary and blessings to merchants and pilgrims attempting the mountain pass.
Returning toward the village, a short uphill path leads to the Pfaefers hill viewpoint on the Guschakopf crest, offering panoramic views across the Alpine Rhine Valley - worth a detour.
Side Trip to Weiher Pracavaels
Descending back toward the road, take a side trip to Weiher Pracavaels, a small reservoir with a volume of roughly 3,200 cubic meters. A nearby path leads directly to an adjacent waterfall and a timber picnic area.
Stage 3: Depths of Altes Bad Pfaefers & Thermal Caverns
A Technical Descent
From the Pracavaels area, pass back through the village to join the steep path descent to the gorge. Rated T3 on the SAC scale, this technical trail drops steeply over roots, rocks, and switchbacks back down to the floor of the Tamina Gorge.
Altes Bad Pfaefers & Paracelsus
The beautiful trail with nany waterfalls follows the river and eventually leads to Altes Bad Pfaefers. Built between 1704 and 1718, it is Switzerland's oldest preserved Baroque bathhouse and currently operates as a museum and restaurant.
Historical records document that between the 14th and 16th centuries, bathers were lowered down the cliff walls on ropes in wooden tubs to soak for days at a time. In 1535, physician Paracelsus served as the resident spa doctor, publishing the first medical treatise on the thermal spring.
The Hot Spring Cavern & Return Leg
After paying the entry fee, enter the hot spring tunnels (Quellengrotte). A 450-m concrete pedestrian walkway lined with educational information panels extends deep into the humid rock cavern where 36.5 deg C thermal water emerges at 4,000 liters per minute.
Completing the interior loop leads back out along the striking return leg inside the gorge itself. Here, the path follows concrete walkways and heavy steel structural supports anchored directly into the rock faces above the churning river.
In this narrow, dramatic fissure, vertical limestone cliffs tower up to 80 meters high directly overhead, nearly enveloping the canyon path while allowing only narrow slivers of open sky to filter through from above.
Stage 4: Valens, UNESCO Sardona Trail & Mapraggsee
Valens Village & Historical Landmarks
After exiting the cavern loop, take the ascending track through the forest to the gorge exit ascent & BBQ spot, passing a shaded picnic area as the path climbs the western canyon wall.
The ascent tops out at Valens, a peaceful terrace village home to Klinik Valens, established in 1970 as a premier center for neurological, rheumatological, and orthopedic rehabilitation.
Just past the clinic stands the Parish Church of St. Philip and St. James (Pfarrkirche St. Philippus und St. Jakobus). Perched at the terrace edge, this Baroque church features an octagonal onion-dome tower, leaded honeycomb windows, and Rococo scagliola altars.
The village has a colorful past: during the Swiss Reformation in 1530, newly converted local villagers purged the church and hurled its statues down the steep cliff face toward Bad Pfaefers - a slope still known today as the Helgahalde ("Holy Slope").
Forest Ravine, Natural Bridge & 310 Wooden Steps
From Valens, follow the forest trail and old bridge descending through dense woodland toward the ravine.
Trail Caution: This forest section features steep, technical terrain rated around T2+. Due to exposed tree roots, loose earth, and sharp inclines, these forest paths can become hazardous and extremely slippery in rain or bad weather. Proper hiking footwear with good tread is essential, and extra caution is advised during wet or snowy conditions...
The trail crosses the gorge ravine over a natural rock bridge formation (Naturbruecke). On the opposite side, ascend a flight of steep wooden steps consisting of 310 timber stairs climbing out of the gorge.
UNESCO Sardona Info Point & Mapraggsee Reservoir
The trail joins the upper flank of the valley at the UNESCO Tectonic Arena Sardona info point at Windegg. Display panels here detail the Glarus Overthrust (Glarner Hauptueberschiebung), a geological fault line where 250-million-year-old rock strata were pushed over younger 35-to-50-million-year-old rock, designated a UNESCO World Heritage site in 2008 - see my other articles for details...
Further along the path is the Mapragg viewpoint, providing clear views over the hydroelectric basin and surrounding peaks. From the viewpoint, descend to the hydroelectric power station operated by Kraftwerke Sarganserland (KSL), a 280 MW capacity pumped-storage facility commissioned in 1977.
Cross the valley floor directly along the Mapraggsee dam wall & reservoir, which holds back 5.3 million cubic meters of water over a surface area of 26 hectares. Mapraggsee forms the lower equalizing basin of a multi-stage hydroelectric system along the Tamina River, which includes at least two major reservoirs - with the higher Gigerwaldsee situated further upstream in the Calfeisental.
The walking route finishes at the Mapraggsee bus stop located adjacent to the reservoir...
Refreshment Stops Along the Route
While this long circuit covers technical mountain terrain, several well-spaced stops along the route provide places to pause for coffee, snacks, or a hot meal:
Pfaefers Village & Schloss Wartenstein: After crossing the Taminabruecke, Pfaefers offers traditional village inns (Gasthaeuser).
Altes Bad Pfaefers (Mid-Hike Rest): Situated right at the floor of the gorge, the historic restaurant inside Switzerland's oldest Baroque bathhouse serves hot meals, coffee, cold drinks, and local desserts on its open-air terrace right beside the river.
Valens Village: A great option after climbing out of the hot spring loop. The local village restaurant and the bistro by Klinik Valens offer quiet indoor and outdoor seating for coffee and snacks.
Bad Ragaz Station & Town Center (Finish): Upon completing the PostBus ride back down the valley to Bad Ragaz train station, you'll find plenty of bakeries, cafes, and restaurants around the station area and central square to relax and refuel after the hike.
Board the PostBus at Mapraggsee for the beautiful return drive down the Taminatal, terminating at Bad Ragaz train station...
Mapraggsee Extension
The loop around Mapraggsee offers a striking contrast between massive 20th-century engineering and rugged mountain wilderness.
Trail at a Glance
Distance: ~6.5 km loop
Time: 1.5 to 2 hours
Elevation: Minimal (~60 meters)
1. Power Plant Launchpad
Start at the Pumpspeicherkraftwerk. Built between 1972 and 1973, this engineering marvel hides its massive 280 MW turbines entirely inside the 75-meter-high concrete dam. Cross to the eastern shore to begin the loop counterclockwise. Keep an eye out for the industrial cable car scaling the mountain - it's private utility transport for the power station workers…
2. The Eastern Shore
The eastern leg follows a flat, paved road. Along the way, you will visit the panoramic viewing point peering down at the deep turquoise waters, followed by a cool, atmospheric tunnel right in the mountain side. Look up near the tunnel to spot the expert-level Mapragg Climbing Crag, where climbers tackle intense, overhanging limestone routes.
3. The Pivot Bridge
At the southern tip of the lake, where the wild Tamina River rushes into the basin, cross the pedestrian bridge. This marks your halfway point and a structural transition.
4. Forest Trek (Western Shore)
Head north back along the forest path. This section shifts into a proper T2 mountain hiking trail. It is a narrow, natural dirt path woven with exposed tree roots, rocky steps, and muddy sections. It rewards you with deep forest shade, lush lakeside meadows, and a true backcountry vibe.
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