The Grand Canyon is 277 miles (446 km) long, up to 18 miles (29 km) wide and attains a depth of over a mile (1.83 km) (6000 feet). Nearly two billion years of the Earth's geological history have been exposed as the Colorado River and its tributaries cut their channels through layer after layer of rock while the Colorado Plateau was uplifted.
Aside from casual sightseeing from the South Rim (averaging 7,000 feet [2,100 m] above sea level), rafting, hiking, running and helicopter tours are especially popular. In October 2010 the North Rim is the host to an ultramarathon. The Grand Canyon Ultra Marathon is a 78-mile (126 km) race over 24 hours. The floor of the valley is accessible by foot, muleback, or by boat or raft from upriver. Hiking down to the river and back up to the rim in one day is discouraged by park officials because of the distance, steep and rocky trails, change in elevation, and danger of heat exhaustion from the much higher temperatures at the bottom.
(source)
Grand Canyon Reservations (official site)
2 comments:
I wonder if Dinosaurs once roamed the Grand Canyon. That would be an interesting discovery if you find a fossil of dinosaurs in that place.
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Hi Michael unfortunately it is illegal to dig up, relocate, and/or remove fossils from Grand Canyon National Park :( but i am certain of the existence of fossils of dinosaurs there.
Here are informations about fossils of the Grand Canyon
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