36 



CRATER LAKE, OREGON 



The cones vary greatly in size and are distributed without regu- 

 larity. Each has been an active volcano. The fragments blown 

 out by violent eruption have fallen about the volcanic orifice 

 from which the}'- issued and built up cinder cones. From their 

 bases have spread streams of lava (coulees), raising the general 

 level of the countr^^ between the cones. From some vents bAJ- 

 many eruptions, both explosive and effusive, large cones, like 

 Pitt, Shasta, and Hood, have been built up. Were we to exam- 

 ine their internal structure, exposed in the walls of the canj^ons 

 carved in their slopes, we should find them composed of over- 

 lapping layers of lava and volcanic conglomerate, a structure 

 which is well illustrated in the rim of Crater lake. 



The journey from Ashland by the Dead Indian road crosses 

 the range where the average altitude is less than 5,000 feet. The 

 road passes within a few miles of Mount Pitt and skirts Pelican 

 bay of Klamath lake, famous for its fishing. After following 

 northward for some twenty miles along the eastern foot of the 

 range, it ascends the eastern slope, along the castled canyon of 

 Anna creek to the rim of Crater lake. 



From Medford or Gold Hill, the trip is a trifle shorter by the 

 Rogue River road. It affords some fine views of the canvons 



RIM OF CRATER LAKE IN THE DISTANCE, AS SEEN FROM THE SOUTH, ACROSS THE 

 CANYON OF ANNA CREEK 



J^rom a photograph by J. S. Diller 



