Exploring Laos's 'cave city'

When the Vietnam War spilled into Laos in the 1960s and '70s, Communist forces hid from the Ameri...  More »

When the Vietnam War spilled into Laos in the 1960s and '70s, Communist forces hid from the Americans in a network of nearly 500 mountain caves. Laos has now opened the doors to its formerly off-limits cave city.  « Less