[DOC] [TLE] Hells Canyon - Wikipedia [PAR] Hells Canyon is a 10-mile (16 km) wide canyon located along the border of 
eastern Oregon, eastern Washington and western Idaho in the United States. It is 
part of the Hells Canyon National Recreation Area and is North America's 
deepest river gorge at 7,993 feet (2,436 m). ... The canyon was carved by the 
waters of the Snake River, which flows more... [DOC] [TLE] Hells Canyon - US Forest Service [PAR] Hells Canyon, North America's deepest river gorge, encompasses a vast and 
remote ... Carved by the great Snake River, Hells Canyon plunges more than a 
mile ... Canyon's terrain glued themselves to North America about 150 million 
years ago ... river corridor is adjacent to the 213,906 acre Hells Canyon 
Wilderness over... [DOC] [TLE] Nature Valley @ nationalgeographic.com [PAR] That idea is taken to an extreme in Hells Canyon, Idaho, where a three-day trek ... 
than the Grand Canyon, Hells Canyon is the deepest gorge in the United States, 
... From the Perrine Bridge, 475 feet (145 meters) above the river near the town of 
... textures of innumerable rock strata carved by the river over millions of years. [DOC] [TLE] Canyon - The shape of the land, Forces and changes, Spotlight on ... [PAR] A canyon may be defined as a narrow, deep, rocky, and steep-walled valley 
carved ... Inner gorge of the Grand Canyon, located in northwestern Arizona. ... 
Others have been carved through multiple layers of igneous (pronounced IG-nee
-us) rock, ... Lowering its floor little by little, the river will take millions of years to 
carve... [DOC] [TLE] 5 of the Largest Gorges & Canyons in the World - WebEcoist [PAR] Jan 3, 2009 ... (source: rickz) While defining canyons as 'largest' or 'deepest' is ... The Grand 
Canyon is a gorge carved by the Colorado River and is ... Park in Arizona, one of 
the first national parks in the United States. ... was created by the Colorado River 
over a period of six million years. ... You forgot Hells Canyon. [DOC] [TLE] Hells Canyon Is Oregon's Very Own Grand ... - Only In Your State [PAR] Jun 28, 2016 ... Hells Canyon in Oregon is the deepest gorge in the country - and it's absolutely 
astounding. ... and has carved through the landscape over millions of years. ... 
Canyon is the deepest river gorge in all of North America---even... [DOC] [TLE] Snake River in Hells Canyon the deepest gorge of North America ... [PAR] Hells Canyon, North America's deepest river gorge, encompasses a vast and 
remote ... Carved by the great Snake River, Hells Canyon plunges more than a 
mile ... Canyon's terrain glued themselves to North America about 150 million 
years ago ... river corridor is adjacent to the 213,906 acre Hells Canyon 
Wilderness over... [DOC] [TLE] Idaho Adventures | Whitebird Summit Ranch B&B Grangeville ID [PAR] Hells Canyon, North America's deepest river gorge, encompasses a vast and 
remote ... Carved by the great Snake River, Hells Canyon plunges more than a 
mile ... Canyon's terrain glued themselves to North America about 150 million 
years ago ... river corridor is adjacent to the 213,906 acre Hells Canyon 
Wilderness over... [DOC] [TLE] Hells Canyon National Recreation Area Idaho - Enjoy Your Parks [PAR] Includes Hells Canyon Scenic Byway, Hells Gate State Park. ... Hells Canyon 
National Recreation Area is North America's deepest river gorge. ... the deepest 
gorge in North America, even rivaling the Grand Canyon, which is over two ... The 
geological history of Hells Canyon began about 300 million years ago when a... [DOC] [TLE] Map of Columbia River Basin Bibi Booth and Shelly Fischman [PAR] This 58-million-hectare area (about the size of France) extends roughly from the 
... The Columbia River Basin is a complex tapestry of mountains, high plateaus, 
desert ... River carved the 2370 m Hell's Canyon, the deepest gorge in North 
America .... who examined changing conditions in the basin over the last 100 
years. [DOC] [TLE] Today on the Land Use Trail: Hells

Question: The deepest river gorge in the United States, Hells Canyon, was carved over millions of years by this river
Answer: The Snake (River)