"um den tunnel zu bauen musste man massiven fels durchbohren" in English Um den Tunnel zu bauen, musste man massiven Fels durchbohren. To build the tunnel they had to drill / bore through solid rock. Detailed translations for "um den tunnel zu bauen musste man massiven fels durchbohren" Um den Tunnel zu bauen, musste man massiven Fels durchbohren. Um den Tunnel zu bauen, musste man massiven Fels durchbohren. To build the tunnel they had to drill / bore through solid rock.