Geology in Connecticut

Discover 7 places to experience unusual geology in Connecticut.

Ancient sand dunes from Glacial Lake Hitchcock.

Bloomfield, Connecticut

Matianuck Natural Area Preserve

Sand dunes from a glacial lake are preserved in this woodland park.

Commemorative plaque on the front of the rock.

Milford, Connecticut

Liberty Rock

This large boulder was used as a lookout point by Revolutionary War militiamen.

Another view of the "Great Scott" rock.

Hartford, Connecticut

Great Scott Moon Rock

An actual piece of the Moon, brought down to Earth by Apollo 15.

Marlborough, Connecticut

Snake Rock

This roadside wonder is as mysterious as it is beloved.

Lava pillows visible in the rock cut.

Meriden, Connecticut

Talcott Basalt Lava Pillows

Hidden behind a Target are pillows of cooled lava that formed at the bottom of a deep lake in the Mesozoic Era.

A view across the remains of the sediment dam

Rocky Hill, Connecticut

Glacial Lake Hitchcock Sediment Dam

Now home to hardy plants, these sand and gravel dunes once held back a massive prehistoric lake.

Welcome to Moodus

East Haddam, Connecticut

Moodus Noises

The Connecticut village named for its subterranean thunder.

Are we missing something unusual in Connecticut?