The Mystery Behind The 2000 Tunnels In Europe – Who Built Them? There are around 2000 tunnels from the medieval era that can be found throughout Europe. To this date, there is no explanation as to why these tunnels exist and who built them. In German they are called “Erdstall“.


The Mystery Behind The 2000 Tunnels In Europe - Who Built Them? There are around 2000 tunnels from the medieval era that can be found throughout Europe. To this date, there is no explanation as to why these tunnels exist and who built them. In German they are called “Erdstall“. submitted by /u/MugetsuTV
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