Pratt Mountain is a 1817 feet (553.8 m) monadnock

Monadnock

A monadnock or inselberg is an isolated rock hill, knob, ridge, or small mountain that rises abruptly from a gently sloping or virtually level surrounding plain...

 located in south-central New Hampshire

New Hampshire

New Hampshire is a state in the New England region of the northeastern United States of America. The state was named after the southern English county of Hampshire. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Atlantic Ocean to the east, and the Canadian...

 within the Wapack Range

Wapack Range

The Wapack Range, sometimes referred to as the Pack Monadnock Range, is a 20-mile range of mountains in south-central New Hampshire and adjacent Massachusetts. The range is considered very scenic and rugged with many bare summits and ledges ranging from 1,800 feet to 2,290 feet. The 22 mile Wapack...

 of mountains. It lies within the town of New Ipswich

New Ipswich, New Hampshire

New Ipswich is a town in Hillsborough County, New Hampshire, United States. The population was 5,099 at the 2010 census. New Ipswich, situated on the Massachusetts border, includes the villages of Bank, Davis, Gibson Four Corners, Highbridge, New Ipswich Center, Smithville, and Wilder, though these...

 and is traversed by the 22 mi (35.4 km) Wapack Trail

Wapack Trail

The Wapack Trail is one of the oldest public, interstate hiking trails in the United States. Opened in 1923, it follows the Wapack Range north-south for , between Mount Watatic in Ashburnham, Massachusetts and North Pack Monadnock mountain in Greenfield, New Hampshire...

. The subordinate peak, Stony Top, 1760 feet (536.4 m), forms the north shoulder of the mountain. Pratt Mountain offers expansive views from rocky ledges along its length.

New Ipswich Mountain

New Ipswich Mountain

New Ipswich Mountain is a monadnock located in south-central New Hampshire within the Wapack Range of mountains. It lies within the town of New Ipswich and is traversed by the Wapack Trail. Barrett Mountain is located directly to the north along the Wapack ridgeline; Stony Top, a subordinate peak...

 is located directly to the north along the Wapack ridgeline; to the southeast rise Binny Hill 1441 feet (439.2 m), Emerson Hill 1551 feet (472.7 m), Nutting Hill 1620 feet (493.8 m), and Mount Watatic

Mount Watatic

Mount Watatic is a monadnock located on the Massachusetts-New Hampshire border, at the southern end of the Wapack Range of mountains. It lies within Ashburnham, Massachusetts, Ashby, Massachusetts, and New Ipswich, New Hampshire; the Wapack Trail and the Midstate Trail both cross the mountain...

, the southern terminus of the Wapack Range.

The east side of the mountain drains into the Souhegan River

Souhegan River

The Souhegan River is a tributary of the Merrimack River in the northeastern United States. long with a drainage area of , it flows north and east through southern New Hampshire to the Merrimack River....

 watershed, to the Merrimack River

Merrimack River

The Merrimack River is a river in the northeastern United States. It rises at the confluence of the Pemigewasset and Winnipesaukee rivers in Franklin, New Hampshire, flows southward into Massachusetts, and then flows northeast until it empties into the Atlantic Ocean at Newburyport...

 thence the Atlantic Ocean

Atlantic Ocean

The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

; the west and south sides drain into the Millers River

Millers River

The Millers River is a river in northern Massachusetts, originating in Ashburnham and joining the Connecticut River just downstream from Millers Falls, Massachusetts...

 watershed, to the Connecticut River

Connecticut River

The Connecticut River is the largest and longest river in New England, and also an American Heritage River. It flows roughly south, starting from the Fourth Connecticut Lake in New Hampshire. After flowing through the remaining Connecticut Lakes and Lake Francis, it defines the border between the...

, thence into Long Island Sound

Long Island Sound

Long Island Sound is an estuary of the Atlantic Ocean, located in the United States between Connecticut to the north and Long Island, New York to the south. The mouth of the Connecticut River at Old Saybrook, Connecticut, empties into the sound. On its western end the sound is bounded by the Bronx...

. Binney Pond, located in Binney Pond State Forest along the Wapack ridgecrest between Pratt Mountain and Binney Hill, is known for a biodiversity

Biodiversity

Biodiversity is the degree of variation of life forms within a given ecosystem, biome, or an entire planet. Biodiversity is a measure of the health of ecosystems. Biodiversity is in part a function of climate. In terrestrial habitats, tropical regions are typically rich whereas polar regions...

 of rare plants and salamander

Salamander

Salamander is a common name of approximately 500 species of amphibians. They are typically characterized by a superficially lizard-like appearance, with their slender bodies, short noses, and long tails. All known fossils and extinct species fall under the order Caudata, while sometimes the extant...

s.