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But the Navajo homeland is harsh country, where it's hard to find good-paying jobs and all too easy to fall sway to alcoholism and despair.

They are the Navajo whose ancestors walked that land at least a century, perhaps many centuries, before the first Europeans arrived.

for destroyer, the word for shark. "We had names for officers, airplanes, submarines, " says Brown.

' " Without native languages, she says , the US wouldn't have had the help of the code talkers during World War II. "

's Drive-In in Page, Ariz. , It wasn't a " foreign " language that the boss restricted, but a native one: Navajo.

Tourists take pictures, surrounded by the Navajo Sandstone colors, inside the Lower Antelope Canyon slot canyon in Page, Arizona.

While their reservation is accessible by modern roads and railroad, it was a more isolated place before about 1920, according to Iverson.

Even at the start of a hike to Buckskin Gulch, the walls of Navajo sandstone darken overhead.

If the Navaho and the Sioux had known what was coming for them, they never would have made those treaties.