the National Forests 43 



9. Tonto National Monument, in the Tonto Forest, Arizona; 

 area, 640 acres. Two prehistoric ruins of ancient cliff dwellings 

 of ethnologic, scientific, and educational interest. 



10. Walnut Canyon, in the Coconino National Forest, Arizona; 

 area, 966 acres. Prehistoric ruins of cliff dwellings of great 

 educational and scientific interest. 



1 1 . Wheeler National Monument, in the Rio Grande Forest, 

 Colorado; area, 300 acres. Certain volcanic formations of 

 unusual interest as illustrating erratic erosion. 



o 



