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Spiral Tunnel No. 20

Spiral Tunnel No. 20

Highlight • Structure

Spiral Tunnel No. 20

Recommended by 165 hikers out of 166

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Location: Valli Del Pasubio, Vicenza, Veneto, Italy

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Best Hikes to Spiral Tunnel No. 20

4.8

(831)

4,927

hikers

1. Strada delle 52 Gallerie from Rifugio Col Del Xomo to Bocchetta di Campiglia

14.8km

05:54

880m

890m

Historic WWI trail through 52 hand-carved tunnels blasted into Monte Pasubio's cliffs.

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4.9

(8)

122

hikers

2. Via Ferrata Gaetano Falcipieri and Strada delle 52 Gallerie from Bocchetta di Campiglia

7.78km

06:16

790m

Via ferrata across five peaks with WWI tunnels and the famous 52 Galleries road.

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4.8

(23)

161

hikers

3. Spiral Tunnel No. 20 – Road of the 52 Tunnels loop from Posina

8.29km

04:17

730m

Intermediate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

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Intermediate

Tips

Roger Eggenberger 🐾👣

July 13, 2025

Probably the most impressive tunnel. Simply crazy!

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Klemens

November 19, 2023

"A few meters away (note: after the 318 m long 19th tunnel) begins the 20th tunnel, which also rises in a spectacular spiral through a rock tower to almost below its summit and exits there. The center of the rock tower, around which the three tunnel spirals rotate, is surrounded by a series of mine holes cut horizontally into the rock. The holes, made at regular intervals, could each hold two boxes of blasting gelatine, which could have been used to blow up the entire rock tower if necessary and thus interrupt the road.
Due to the lack of fresh air supply, drilling with drills and explosives proved to be extremely difficult, especially in the long tunnels. Acetylene lamps were usually used during excavation work." Source: Information sign on the side of the road.

This 86 m long spiral tunnel, which winds upwards through the rock in a 1080 degree spiral, is certainly one of the highlights of this hike. For this tunnel you definitely need a headlamp, if necessary a bicycle lamp or enough battery on your smartphone.

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JR on Tour

April 23, 2024

One of the 52 beautiful tunnels on the hiking trail

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Details

Informations

Elevation 1,680 m

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Tuesday 28 October

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Max wind speed: 6.0 km/h

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See hikes here

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Location: Valli Del Pasubio, Vicenza, Veneto, Italy

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Spiral Tunnel No. 20

1. Strada delle 52 Gallerie from Rifugio Col Del Xomo to Bocchetta di Campiglia

2. Via Ferrata Gaetano Falcipieri and Strada delle 52 Gallerie from Bocchetta di Campiglia

3. Spiral Tunnel No. 20 – Road of the 52 Tunnels loop from Posina

Other Popular Places to Check Out

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