"The contentious history of mapping the Grand Canyon." Topic

"When the United States took possession of the Grand Canyon from Mexico in 1848, no one had mapped it. The canyon — including a dusty plateau cut by a big river above it — was terra incognita on the territorial map of the fledgling nation. Three generations later, the Grand Canyon would be crisscrossed by fences and borders — divided to suit its "discoverers'" desires. But before individuals could lay legal claim to the land, someone had to map it.

In May of 1869, the Powell expedition arrived in Green River, Wyoming, via the yet-to-be-completed transcontinental railroad. Its 10 men — wearing cork life jackets and rowing four wooden boats — embarked with little inkling of what lay ahead. Three months later, six men emerged from the Grand Canyon carrying the coordinates needed to begin mapping a new territory…"

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Amicalement
Armand

Nice history lesson. Hiked down and back up in a day in Aug 1981, One day in my life I won't forget.

Glad you enjoyed it my friend!. (smile)

Amicalement
Armand