Compared with the most sophisticated weapons systems in use today, tunnels have withstood the test of time. There’s no way to know how long drones or lasers or anti-missile defense systems will last, but as long as there is warfare, tunnels will almost certainly be part of the fight.
(Tags : Notes From the Underground: The Long History of Tunnel Warfare (Unabridged) Arthur Herman Audiobook, Arthur Herman Audio CD )
