What are Massachusetts land formations?

* Mount Greylock: Highest point in Massachusetts at 3,489 feet.

* Berkshire Hills: Range of low mountains in western Massachusetts.

* Holyoke Range: Range of mountains in central Massachusetts.

* Wachusett Mountain: Isolated mountain in central Massachusetts.

Hills:

* Blue Hills: Range of hills in eastern Massachusetts.

* Milton Hill: Highest point in eastern Massachusetts at 311 feet.

* Ponkapoag Hill: Prominent hill in southeastern Massachusetts.

* Purgatory Chasm: Gorge and hiking area in central Massachusetts.

Valleys:

* Connecticut River Valley: Major valley in central Massachusetts.

* Deerfield Valley: Valley in western Massachusetts.

* Hoosic River Valley: Valley in western Massachusetts.

* Merrimack River Valley: Valley in northeastern Massachusetts.

* Pioneer Valley: Valley in western Massachusetts.

Rivers:

* Connecticut River: Longest river in New England.

* Deerfield River: Major river in western Massachusetts.

* Hoosic River: Major river in western Massachusetts.

* Merrimack River: Major river in northeastern Massachusetts.

* Millers River: Major river in central Massachusetts.

Lakes:

* Quabbin Reservoir: Largest lake in Massachusetts.

* Wachusett Reservoir: Major lake in central Massachusetts.

* Lake Winnipesaukee: Major lake in central New Hampshire that extends into Massachusetts.

* Lake Chargoggagoggmanchauggagoggchaubunagungamaugg: Lake in central Massachusetts with a long and unpronounceable name.

* Walden Pond: Pond in eastern Massachusetts made famous by Henry David Thoreau.