Korea's demilitarized zone has become an amazing accidental nature preserve that gives hope for a brighter future for a divided land.

Travel into the natural beauty of the DMZ, where salmon, spotted seals, and mountain goats freely follow the seasons and raise their families in this 2.5-mile-wide, 150-mile-long corridor where no human may tread. But the vivid seasonal flora and fauna are framed by ever-present rusty razor wire, warning signs, and locked gates--and regularly interrupted by military exercises that continue decades after a 1953 ceasefire in the Korean War established the DMZ.