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on BBC4 8:30pm Thursday 18 April
Season 1. Episode 1 of 4. New series. Danny Baker uses archive footage to explore a different subject every week, and begins by looking at tunnels, sharing fun and interesting facts about many of the subterranean realms, including the Channel Tunnel. The journalist and comedian also reveals how a man makes badger holes in his garden via sewers, and champions 1990s tunneller Swampy
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