CRATER LAKE, OREGON 



47 



the thickest part of the Uiva effused at that time had soliditied, 

 tlie mountain colUipsed and sank away and the yet viscous jx)!-- 

 tion of the stream followed toward the i)it. 



It has been sucirested. l)ut perhaps not in serious tliought, 

 that the cone on Wizard ishind may represent the summit of the 

 sunken Mount Mazama, projecting above the water. To deter- 

 mine the truth of the matter we must cross over to the island. 

 Wizard island has two portions — an extremely rough lava held 

 and a cinder cone. The lava is dark and has a much more 



SNOWDRIFT IN THE CRATER OF THE CI.VDER CONE ON WIZARD ISLAND 



From a photograph by H. B. Pallon 



basaltic look than any seen in the main body of the rim. It 

 has evidently been eruptetl from the base of the cinder cone in 

 its present position. The cinder cone, too, is a perfect little 

 volcano with steep symmetrical slopes, 845 feet in height, and 

 surmounted b}^ a crater 80 feet deep. It is so new and fresh 

 that it is scarcely forested, and shows no trace of weathering. 

 Instead of being a part of the sunken Mount Mazama, it is an 

 entirely new volcano built uj) since the subsidence by volcanic 

 action upon, the bottom of the i)it. Were it not for the lake 

 the whole bottom of the pit could be examined, and it is pos- 



