Geologically , it is located in the upper part of the Cenomanian stage of the Cretaceous .
Totternhoe Stone is a relatively hard chalk outcropping in the middle of the Lower Chalk in the Chiltern Hills in Hertfordshire , Buckinghamshire , Bedfordshire and Cambridgeshire , England .
Geologically , Totternhoe Stone is located in the upper part of the Cenomanian stage of the Cretaceous .
Totternhoe Stone is a relatively hard chalk outcropping in the middle of the Lower Chalk in the Chiltern Hills in Hertfordshire , Buckinghamshire , Bedfordshire and Cambridgeshire , England .