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next section). Once the river turns westward, it cuts deeply through the middle of an elevated mass of uplifted strata that attains heights of nearly 2300 m on the South Rim and 2844 m on the North Rim. The North Rim is the southern edge of the Kaibab Plateau, which in winter has a permanent snow cover. At the bottom of the canyon below the South Rim is Phantom Ranch, a camping facility run by the NPS. As discussed in the next section, Phantom Ranch was used to collect surface and upper-air data
next section). Once the river turns westward, it cuts deeply through the middle of an elevated mass of uplifted strata that attains heights of nearly 2300 m on the South Rim and 2844 m on the North Rim. The North Rim is the southern edge of the Kaibab Plateau, which in winter has a permanent snow cover. At the bottom of the canyon below the South Rim is Phantom Ranch, a camping facility run by the NPS. As discussed in the next section, Phantom Ranch was used to collect surface and upper-air data
