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Bastion Tunnels. Marta Viiul 10 .a. History. The defensive tunnel system Built in the 1600s 2003 pentagonal system of limestone-lined tunnels was found. Other tunnels. Open for tours Built in the 17th century
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Bastion Tunnels Marta Viiul 10.a
History • The defensive tunnel system • Built in the 1600s • 2003 pentagonal system of limestone-lined tunnels was found
Other tunnels • Open for tours • Built in the 17th century • Were renovated into bomb shelters • Modernized during the Soviet period
On the tunnel tour • Old equipment • A slow-moving train ride