Although half-billion year old granite formed Town Hill in Ipswich, most of the town's landforms date to about 20,000 years ago.
Supercontinents, Ice Ages, and the Hills of Ipswich
Tag: prehistoric
On the Massachusetts North Shore
Although half-billion year old granite formed Town Hill in Ipswich, most of the town's landforms date to about 20,000 years ago.
Historic Ipswich 