The maps illustrate the construction of two underground vehicle tunnels in Australia, with the first built between 1986 and 1998 while the second was built between 2002 and 2006. Overall, the two tunnels are considerably
The maps illustrate the construction of two underground vehicle tunnels in Australia, with the first built between 1986 and 1998 and the second between 2002 and 2006. Overall, the two tunnels are considerably different,