INTERGLACIAL GORGES 63 



THE VALLEY OF SIX MILE CREEK AND ITS GORGES 



The troughlike Cayuga Lake basin sphts at Ithaca into two 

 prominent prongs, the one carrying the Inlet stream from the south- 

 west and the other occupied by Six Mile Creek, which enters from 

 the southeast (see Fig. i). Of the two, the Inlet valley is the deeper 



Fig. I. — Map of the Ithaca region, showing the course of lower Six Mile Creek 

 and its relation to the Cayuga valley and to other streams in the neighborhood. Area 

 shown on Fig. 2 is inclosed by dotted lines. 



and the steeper walled and is the main prolongation of the lake 

 basin. It continues with a gradual rise of the valley bottom for 

 about 10 miles southwest of Ithaca and then, by a "through valley " 

 connects southward with one of the tributaries of the Susquehanna. 

 It is a typical glaciated trough. Tributary valleys along this 



