
Mile 27 - MNA Rapid
Scientists on a research river trip were the first to encounter this rapid after a rockfall deposited large boulders into the river here in March of 1974. They named the rapid MNA after the Museum of Northern Arizona.
Rare spots are available on the Grand Canyon August 24 and 25. Cataract Canyon September 2 and 9. Desolation Canyon September 5.
Scientists on a research river trip were the first to encounter this rapid after a rockfall deposited large boulders into the river here in March of 1974. They named the rapid MNA after the Museum of Northern Arizona.
This comprehensive PDF guides include river maps, overview, full itineraries, camping and weather information, details on physical requirements, packing lists and more.