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Updated: June 29, 2025
The well-trained saddle mules of El Tovar stables go up and down this part of the trail without hesitation. Red-Wall Limestone. Standing on the summit of the red-wall limestone, we are again forcefully reminded that it is the most prominent member of the Grand Canyon strata. Its insistent mass is a thousand feet in thickness.
Sending the pack animals on from here, we wait until some one descends from the near-by Horseshoe Mesa, where the camp of the Canyon Copper Company is located, with candles ready to conduct us through the wonders of this natural excavation in the red-wall limestone.
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