BETWEEN THE TYNE AND THE WANSBECK 



99 



Fig. 4. 



Plans to show variojis stages m the existence of the Glacial Lakes 



(continued). 



Shading and other signs as in Figs. 2 and 3. 



Fig. 4 shows the last stage — the Wansbeck Lake overflowing into the Ponl 

 Lake through Shilvington Slack, the Pont Lake and the Newbiggin Lake into 

 the Ouseburn Lake through Woolsington Slack and Newbiggin Dene, and the 

 Ouseburn Lake into the Tyne through Wallbottle Dene. 



