There is a tunnel in the cave behind Predjama Castle that leads to Postojna Cave. The castle's owner used that passageway to keep the castle supplied with food while it was under a one-year siege in the 15th century.
There is a tunnel in the cave behind Predjama Castle that leads to Postojna Cave. The castle's owner used that passageway to keep the castle supplied with food while it was under a one-year siege in the 15th century.
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Thomas R. Powell
Last updated on 01/06/2020.