Tuen Mun-Chek Lap Kok Tunnel
Tuen Mun-Chek Lap Kok Tunnel: the extraordinary tunnel is dug out by two boring machines 50 metres below the sea - a record in terms of depth for Bouygues Construction.
Tuen Mun-Chek Lap Kok Tunnel: the extraordinary tunnel is dug out by two boring machines 50 metres below the sea - a record in terms of depth for Bouygues Construction.