Afghan Tunnel: Decrepit, Dangerous Yet Indispensible - Sean Carberry

That route passes through Afghanistan's perilous Salang Tunnel, 11,000 feet up in the Hindu Kush mountains. The Soviet-built tunnel was heralded as a marvel of engineering when completed in 1964. - Afghan Tunnel: Decrepit, Dangerous Yet Indispensible
Afghanistan Challenging For Humanitarian Workers : NPR