Ancient TBMmers (!) at Amsterdam's Koningsdag (King's day)
Tags: Tunnel Boring Machine, fun, Amsterdam TBM, Herrenknecht TBM
Ancient TBMmers at Amsterdam's KoningsDag (King's Day)
Tags: tunnel boring machine, tunneller, fun, Herrenknecht TBM
Tags: tunnel, fun
cover tunnel photo by: Matt Brown from London, England / CC BY
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