Grottenstein castle ruin

Grottenstein Castle ruin (Burgruine Grottenstein) is a cave castle on the slopes of Mount Calanda, above the village of Haldenstein in the municipality of Chur, canton of Graubünden. Builders sealed the mouth of a small cave under a rock overhang with a wall, and part of it still stands. A short, easy trail from Haldenstein leads up to it.

What is Grottenstein?

This is a fortification set inside a natural cavern. The wall that closed the entrance was about 1.7 m thick, and roughly 22 m of it survives. There are no towers or halls to explore, so the appeal is the setting: masonry fused with rock high above the Rhine valley. A spring rises inside the cave, which suggests it worked as a refuge when danger threatened.

Where does the name come from, and what is its history?

Despite how it sounds, the name has nothing to do with the German word "Grotte". The older form was Chrottenstein, from the Graubünden dialect word "Chrott", meaning toad. Records are thin. One cave-castle database proposes construction around 1180, while written mentions only surface in the 17th century, when the site was already a ruin. In 1742 the chronicler Nicolin Sererhard listed it as Krottenstein. Ownership is unclear: the lords of Haldenstein or of Lichtenstein are the usual guesses, but no document confirms either.

Is there any folklore?

Local tales speak of a white maiden guarding a hidden treasure, and of a toad tied to the place. They add atmosphere to the final stretch of path.

How do you get there?

The walk starts in Haldenstein. By bus, take Chur city bus line 3 to the stop Haldenstein Dorf. By car, leave the motorway at Chur Nord and follow the signs for Haldenstein, where a public car park serves the village.

• Distance: 2.9 km round trip
• Time: about 1 hour 15 minutes
• Ascent: 268 m (from 567 to 835 m above sea level)
• Difficulty: easy

The route climbs along the Alpstrasse, and the last section is a mountain path up to the ruin. You return the same way until just before the Haldenstein ruin, then turn right to the village. Wear sturdy shoes. Entry is free.

What else is nearby?

Haldenstein has further castle ruins that combine well with this walk. The village grew from the mid-12th century, and earthquakes in 1769 and 1787 damaged parts of it. The old town of Chur is a few minutes away by bus.

Frequently asked questions

Is there an entry fee? No. You visit the ruin on your own, free of charge.

How long does the walk take? The loop from Haldenstein is 2.9 km and takes about 1 hour 15 minutes.

Is the trail difficult? It is rated easy, though the 268 m of climbing calls for sturdy footwear.

How do I get there without a car? Take Chur city bus line 3 to Haldenstein Dorf.

Why is it called Grottenstein? The name derives from the dialect word "Chrott", toad, not from the cave.