Continuing along the path that surrounds the entire Sacred Area of Monte San Michele, between Cima 2 and Cima 3, one encounters the entrance portal of the Schönburgtunnel, one of the main defense constructions of the Austro-Hungarian army. Its construction began in 1915 and was carried out by the 7th Feldjager Battalion who dedicated the tunnel to the general of the 6th Infantry Division, Alois von Schönburg Hartenstein, protagonist of the Third Battle of the Isonzo in October 1915.
To know more:
turismofvg.it/Schonburgtunnel-Monte-San-Michele

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Martha Pan

January 7, 2023

Hiking

Austro-Hungarian bunker on Mount San Michele built during the First World War. Now in ruins.

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Giovanni

August 17, 2025

Mountain biking

Austro-Hungarian shrine on the Karst that witnessed the battles of the First World War.

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1. Summit 3 of Monte San Michele – Peak 3 of Monte San Michele loop from Sagrado / Sagrât / Zegraj

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2. Peak 3 of Monte San Michele – Brestovec Historical Trench loop from Gabria / Gabrje

13.9km

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Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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4.5

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3. Schönburg Tunnel – Peak 3 of Monte San Michele loop from Sagrado / Sagrât / Zegraj

6.32km

01:45

110m

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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Easy

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Elevation 300 m

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Location: Sagrado, Gorizia, Friuli Venezia Giulia, Italy

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Schönburg Tunnel

1. Summit 3 of Monte San Michele – Peak 3 of Monte San Michele loop from Sagrado / Sagrât / Zegraj

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3. Schönburg Tunnel – Peak 3 of Monte San Michele loop from Sagrado / Sagrât / Zegraj

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