Claustra Alpium Iuliarum, Roman fortification system in Julian Alps, Slovenia.
The Claustra Alpium Iuliarum extends across multiple mountain passes with stone walls, watchtowers, and military strongholds creating an interconnected defense network.
Built between the 3rd and 5th centuries, this barrier system protected the Roman Empire's eastern gateway into Italy through strategic control of mountain passages.
The remains of this fortification system demonstrate Roman military engineering methods through preserved walls reaching 8 meters high and 2 meters thick.
Visitors can explore the archaeological site through marked trails connecting different sections of the ancient defense system between Rijeka and Bača Ravine.
The fortress of Ad Pirum within the system contained facilities designed to accommodate 100,000 soldiers while maintaining a regular garrison of 500 troops.
Part of: Roman limes
GPS coordinates: 45.86361,14.11167
Latest update: March 5, 2025 13:13
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