hammer, the rocks produce various ringing sounds. Vehicular access 

 to the area is marginal and walking is recommended. 



The Jefferson River Canyon has been cut through vertical 

 limestone walls and the area contains many caves. Best known are 

 Lewis and Clark Caverns located at the state park by that name. 

 Many geology students have done their first mapping of complex 

 geologic structures in the canyon. 



Numerous warm springs also are found along these drainages. 

 While a few of the hot springs remain undisturbed, many have been 

 developed into resorts -- including Boulder, Bozeman, Norris, and 

 Silver Star hot springs. 



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