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Italy

Aosta Valley

La Thuile

The entrenchments of Prince Tommaso

Routes

Hiking trails & Routes

Italy

Aosta Valley

La Thuile

The entrenchments of Prince Tommaso

Easy

4.4

(5)

hikers

The entrenchments of Prince Tommaso

00:47

2.77km

60m

Hiking

This hike combines magnificent nature and centuries-old history. From the square in the hamlet of Petosan, a small balcony suspended above La Thuile, one of the most spectacular views in the Aosta Valley opens up before you: Mont Blanc in all its majesty, the jagged Grandes Jorasses, and the unmistakable…

by La Thuile - The Wild Side of Mont Blanc

Last updated: July 19, 2025

Waypoints

Start point

Parking

Get Directions

558 m

La Théraz

Highlight • Viewpoint

Théraz is a sweet and bright plain, from which you can enjoy beautiful views. It is a historically important place as here there are old trenches and fortifications built by Prince Thomas of Savoy in 1600.

Translated by Google •

Tip by

627 m

Petosan

Highlight • Settlement

The beautiful Petosan basin is dazzlingly green in summer. The silence of the basin allows for pleasant walks while admiring the Grandes Jorasses chain and breathing in the pure air. Here you can breathe the mountain!

Translated by Google •

Tip by

2.64 km

17th-century entrenchments

Highlight • Historical Site

The Prince Thomas trenches still represent today the most visible element of the defensive system that develops between the Colle del Piccolo San Bernardo, La Thuile and the area above …

Translated by Google •

Tip by

2.77 km

End point

Parking

Way Types & Surfaces

Way Types

1.53 km

634 m

590 m

< 100 m

Surfaces

2.12 km

565 m

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Weather

Saturday 30 May

18°C

8°C

56 %

Additional weather tips

Max wind speed: 12.0 km/h

to get more detailed weather forecasts along your route

Comments

June 28, 2025

This hike combines magnificent nature and centuries-old history. From the square in the hamlet of Petosan, a small balcony suspended above La Thuile, one of the most spectacular views in the Aosta Valley opens up before you: Mont Blanc in all its majesty, the jagged Grandes Jorasses, and the unmistakable

Translated by Google •

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This route was planned by komoot.

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The entrenchments of Prince Tommaso

La Théraz

Petosan

17th-century entrenchments

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