Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Marble Canyon  | |
|---|---|
| RT | Arizona |
| Coconino County Arizona | |
| Culberson County Texas | |
| Grand Canyon | |
| national monuments | |
| Texas | |
| SN | Gorge along the Colorado River. Often considered the upper part of Grand Canyon. Established as National Monument in 1969. Abolished as a national monument and added to Grand Canyon national park in 1975. Also a canyon in Culberson County, Texas. Indexed |