Kaiserjäger and Lagazuoi war tunnels

Ascent to Mt. Lagazuoi along the communication way of the Austrian troops; descent along the war tunnel built by the Italian troops.


5.8 km


4-5 h


721 m


2751 m

The itinerary starts at Passo Falzarego (2105 m). You can reach the pass by car or by local bus service, driving along SR48 road for 17 km.

CAI trail No. 402 begins in front of the Lagazuoi cable car station. Soon leave the trail and join a new trail rising south-west over the scree slope created by a mine explosion.

Hike up to the left over the no man’s land between the Austro-Hungarian trenches to the west and the Italian trenches to the east.

Continue along a few ledges to reach the famous suspended bridge, about 10 m long and 25 m above ground. Cross the bridge and you get on a fairly exposed, though protected ledge.  The equipped trail continues through well preserved war emplacements to then descend to Cengia Martini. A steep climb leads to the ridge and further up to the summit of Mt Piccolo Lagazuoi and finally to Rifugio Lagazuoi.

You can descend by cable car, but you would miss the war tunnel. A veritable must-do.

The tunnel is over 1 km long, totally dark – wear a headlamp –  except for some small openings (protected military lookouts) carved out in the rock and open onto the void. It features several branches, intersections, and a few rooms with  remains-reconstructions of war emplacements and huts. The tunnel is rather steep, with high wooden steps and iron cable as hand railing, and since some sections are rather low wearing a helmet is highly recommended.  The route is often wet and slippery for the snow melting on the outer walls and might feature some icy patches, therefore if you meet these conditions you’d better give up. Even in summer best scenarios, the tunnel is very cold and damp. High altitude, total darkness and lack  of oxygen may  affect those who suffer from claustrophobia, even if there are no real dangers.

The bottom end of the tunnel opens onto a large ledge equipped for safety leading to a water funnel where the left branch departs. It ends up in a vast rocky cave, starting point of the famous “Martini Ledge” (equipped trail reserved to expert equipped hikers). After a short stretch through a tunnel you finally end up in the open air, continue along a few equipped stretches and then descend along CAI trail No. 402 down to Passo Falzarego.

The descent is about 2 and a half hours.

Rest stop: Rifugio Lagazuoi: Ph. +39 340 719 5306

Recommended period:

From June to October

Recommended clothing:

Harness, lanyard with carabiners and belay devices, helmet, and gloves. Backpack to carry the gear, food and a change of clothes. Hiking shoes, rain jacket and water bottle.

Minimum recommended age:

14 years

Route features:



Check the weather forecast: not recommended in case of bad weather.







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Our offers:

The Kit includes: harness, rope, belay devices, carabiners, and helmet. All these items can also be rented separately.

1/2 day

15 €

1 day

20 €

2 days

35 €

3 days

44 €

4 days

52 €

5 days

57 €

6 days

61 €

+1 day

4 €

Livelli di difficoltà

Facile: Percorso attrezzato con esposizione contenuta e lunghi tratti di cammino. Ottime protezioni fisse che consistono principalmente in funi metalliche utilizzate per aumentare la sicurezza.

Medio: Via ferrata breve con bassa esposizione. L’itinerario include generalmente colatoi, camini, brevi tratti verticali dove catene, funi, staffe e scale aiutano la progressione.

Difficile: Via ferrata di media lunga durata che richiede buona condizione fisica e competenze tecniche. Spesso l’itinerario è verticale e si possono incontrare tratti in strapiombo. Attrezzatura presente: funi, catene, staffe e scale.

Intenso: L’itinerario presenta esposizione e sequenze tecniche in serie. Serve ottima forma fisica e competenza tecnica. L’itinerario è principalmente verticale.

Estremo: L’itinerario presenta molti tratti esposti, sequenze dove serve tecnica di progressione. Per aumentarne le difficoltà sono ridotti al minimo gli infissi artificiali. Sono richieste ottime competenze tecniche e allenamento.

Grading system

Easy: equipped trail with minimum exposure and long walking sections. Optimum fixed protection, consisting in iron cables to increase safety.

Medium: Short Via Ferrata with little exposure. The route may include water funnels, chimneys, short vertical stretches where, chains, ropes, and ladders help ascending.

Difficult: medium-long Via Ferrata requiring good physical conditions and technical skills. The route is often vertical with  fairly exposed sections. Secured with cables, chains, ropes and ladders.

Severe: The whole route features exposure and technical sections. Excellent physical conditions and good climbing technique are required. The route is mainly vertical.

Extreme: The route features many exposed sections where high technical skills are required. To increase the level of difficulty, artificial holds are limited. Above-average ability and a good level of training are required.

Please read!

Snow Service does not organize tours nor offers guiding services. We only suggest the safest and easiest itineraries you can enjoy with our products.