America’s National Parks
Puzzle 50 · The Desert Southwest · Page 74 in print
Grand Canyon River
Despite its name, Lava Falls Rapid was formed from debris washed down Prospect Canyon, not from old lava flows, and the river now runs 50 feet deeper than the base of the ancient lava dams.
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The Colorado River seen from Desert View Point.
NPS/Kristen M. Caldon · Public domain (U.S. federal government work) · Original recordImage changes
Resized and converted to JPEG for display; no subject alteration.

Shinumo Creek, a tributary within Grand Canyon.
NPS PHOTO BY MEREDITH HARTWELL · Public domain (U.S. federal government work) · Original recordImage changes
Resized and converted to JPEG for display; no subject alteration.
The words
Black Bridge
Black Bridge, the bridge crossing the Colorado River near Phantom Ranch.
Crystal Rapid
Crystal Rapid, the Colorado River rapid beside Crystal Creek's debris fan.
Dory
A dory, a boat used for Grand Canyon river trips.
Elves Chasm
Elves Chasm, the named side drainage by Royal Arch Creek's confluence with the Colorado River.
Hualapai
The Hualapai people, one of Grand Canyon's traditionally associated Indigenous peoples.
Humpback Chub
The humpback chub, the native fish conserved in the Colorado River through Grand Canyon.
Inner Gorge
The inner gorge, the deepest canyon landscape exposing ancient igneous and metamorphic rocks.
Lava Falls
Lava Falls Rapid, the Colorado River rapid formed by debris from Prospect Canyon.
Lees Ferry
Lees Ferry, the starting place for river trips through Grand Canyon.
Nankoweap
Nankoweap, the river-side delta and camping area beside Nankoweap Creek.
Phantom Ranch
Phantom Ranch, the lodging settlement at the bottom of Grand Canyon.
Powell
John Wesley Powell, the geologist who led expeditions down the Colorado River.
Redwall Cavern
Redwall Cavern, the named cavern stop on Colorado River trips.
Sockdolager
Sockdolager Rapid, the named Colorado River rapid in Grand Canyon.
Vishnu Schist
Vishnu Schist, a metamorphic rock exposed in Grand Canyon's basement rocks.
Sources
- Status of the North Rim - Grand Canyon National ParkNational Park Service
- B-Roll Video: Point of View from Rafts and Raft Riders - Grand Canyon National ParkNational Park Service
- Recreational Fishing Information - Grand Canyon National ParkNational Park Service
- Noncommercial River Trip RegulationsNational Park Service
- Full Steam Ahead: A Historic Village Tour - Grand Canyon National ParkNational Park Service
- Tributary Translocations - Grand Canyon National ParkNational Park Service
- Geology - Grand Canyon National ParkNational Park Service
- Tuweep - Grand Canyon National ParkNational Park Service
- Lodging - Grand Canyon National ParkNational Park Service
- Explorers - Grand Canyon National ParkNational Park Service
- Vishnu Basement RocksNational Park Service