Costa Rica's Talamanca Mountains are among the most remotes places in Central America. Far from major cities, thick with tropical jungle, rivers, venomous snakes and cold mountaintops, the region is practically inhospitable. This is where an airplane with 68 Argentine Air Force cadets on board disappeared without a trace in 1965.
In 1992 Aura Elena Farfán founded Famdegua, a Guatemalan organization that supports families in their search for loved ones who were killed or disappeared during the country's brutal civil war. She's still active.