Erdstall
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An erdstall is a type of tunnel found across Europe. They are of unknown origin but are believed to date from the Middle Ages. A variety of purposes have been theorized, including that they were used
Entry to the Ratgöbluckn erdstall at Perg, Austria–its passages are high enough for tourists to access (electric lights since 2002).
Vertical passage (slip hole)
Horizontal passage
Sitting recess at the end of the tunnel
Tunnel
Videos
A tunnel is an underground or undersea passageway. It is dug through surrounding soil, earth or rock, or laid under water, and is usually completely enclosed except for the two portals common at each
Erdstall
…An erdstall is a type of tunnel found across Europe. They are of unknown origin but are believed to date from the Middle Ages. A variety of purposes have been theorized, including…
Tunnel in Col du Galibier, France
Tunnel in Fort de Mutzig, France
Decorated portal to a road tunnel in Guanajuato, Mexico
Utility tunnel for heating pipes between Rigshospitalet and Amagerværket in Copenhagen, Denmark