Swiss Tectonic Arena Sardona and Prehistoric Pile Dwellings around the Alps
Plan this ride
Recorded distance
269 km
Riding-time estimate
4 h 17
Journey
Recorded itinerary
Distance and timing basis
Ordered leg totals agree within rounding. Stop distances are approximate sums of rounded legs. Stops, delays, approach and any separate return travel add time. Basis: producer-declared routed record.
Reading history stays on this device. My road watch requires a separate selection; opening it does not subscribe this ride.
Distance and riding time are measured on the routed road. Check local closures and conditions before you ride.
A 269 km round trip from Flims - roughly 4 h 17 in the saddle. On the way it passes Technikum, Prehistoric Pile Dwellings around the Alps and back through Technikum. The stored terrain estimate reaches about 1,850 m; a measured road-elevation profile is not available.
Scenic road chapters
Pragel and Ibergeregg Loop
Expect company on a summer weekend. Early is better than fast. For about 61 km this is Pragel and Ibergeregg Loop, a road with a name of its own and a reason for it.
Rider note
Check the pass is open before you commit to it.
Chapter facts
Length
61 km
Named road
Pragel and Ibergeregg Loop
Pass
Pragel Pass
Waypoint introductions and full write-ups
1. Swiss Tectonic Arena Sardona
Twice a year, in spring and autumn, the sun shines through a hole in a mountain ridge and lights up the church tower of Elm, a village in the Sernf valley of canton Glarus. The hole is the Martinsloch, a natural window in the Tschingelhörner, and it sits right on one of the most famous geological features in the world: a sharp line along the cliffs, clearly visible from the valley, where older rock lies on top of much younger rock. This is the Glarus thrust, and it helped geologists understand how mountains are built by the stacking of enormous slabs of the earth's crust. The Swiss Tectonic Arena Sardona was listed by UNESCO in 2008.
May refer to an earlier itinerary; verify against your selected route before riding.
Planning note
Swiss Tectonic Arena Sardona is where the day begins. Next is Technikum.
2. Technikum
Students at the technical university in Rapperswil study engineering on a lakeside campus, and beneath the shoreline in front of their buildings lie the remains of villages that people built on piles thousands of years ago. The site, named after the old Technikum, as the college was long known, is one of the prehistoric pile dwelling sites around Lake Zurich included in the UNESCO listing of 2011. Nothing is visible, but the idea that this shore has been home to people for so long gives a different perspective to a stroll along the promenade.
May refer to an earlier itinerary; verify against your selected route before riding.
Planning note
Technikum comes up about 61 km into the recorded legs. Next is Prehistoric Pile Dwellings around the Alps.
3. Prehistoric Pile Dwellings around the Alps
Five thousand years ago, people were building houses on stilts at the edge of lakes across the Alps, and then the lakes rose, buried the houses and kept them almost perfectly in the mud. The remains of these pile dwellings, found in the nineteenth century when a drought lowered the water, include posts, tools, textiles, food and even bread, and they gave archaeologists an extraordinary view of Stone Age and Bronze Age life. A hundred and eleven of the sites, in six countries, were listed by UNESCO in 2011, and the Swiss share is the largest.