Mérnöki műtárgyak - Season 2 (2004) (évad)
Dokument
Egyesült Államok,
2004, 52 perc
Tartalmak(1)
The Eastern Highland, a vast plateau 100 miles south of the Artic Circle, is the site of a bold challenge of extreme engineering. World-class tunnel diggers are carving more than 45 miles of tunnels through solid rock hundreds of feet underground. (Prime Video)