75 



The northern part of the fen however still continued to lie 

 under water, and is remembered as a haunt of wild-fowl by 

 some of the neighbouring villagers. 



Peat still remains here, and in patches elsewhere over the 

 area, but in other parts the floor of gravel and sand is exposed, 

 its limits still roughly marking out the extent of the old 

 lake. 



Fulbourn Common, Coldham Common and Cherry Hinton 

 Mere, all marshes at one time, were doubtless formed in the 

 same way, the long bank of gravel blocking the drainage and 

 causiner an accumulation of water on the southern side. 



