Bats have nothing on this nocturnal hiker.
Deep in the cloud forests of Costa Rica, you'll learn to dodge fireballs and poisonous frogs while tracing a circuit around a living volcano.
While hiking light may seem like a new trail trend, nearly 20 years ago, many outdoor manufacturers were beating the ultralight drum.
How light can you go? Six friends face off to determine whether carrying less gear makes you half as macho, or twice as smart.