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The top documents tagged [cuttingthe black canyon]
Physical geology of_the_black_canyon_of_gunnison[1]
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![Physical geology of_the_black_canyon_of_gunnison[1]](https://cdn.vdocuments.net/doc/330x215/55a219911a28abe1518b45d4/physical-geology-oftheblackcanyonofgunnison1.jpg)