Hengistbury Head is a headland

Headlands and bays

Headlands and bays are two related features of the coastal environment.- Geology and geography :Headlands and bays are often found on the same coastline. A bay is surrounded by land on three sides, whereas a headland is surrounded by water on three sides. Headlands are characterized by high,...

 jutting into the English Channel

English Channel

The English Channel , often referred to simply as the Channel, is an arm of the Atlantic Ocean that separates southern England from northern France, and joins the North Sea to the Atlantic. It is about long and varies in width from at its widest to in the Strait of Dover...

 between Bournemouth

Bournemouth

Bournemouth is a large coastal resort town in the ceremonial county of Dorset, England. According to the 2001 Census the town has a population of 163,444, making it the largest settlement in Dorset. It is also the largest settlement between Southampton and Plymouth...

 and Milford on Sea

Milford on Sea

Milford on Sea is a large village and civil parish located on the south coast of England in the county of Hampshire. With a population of approximately 4500, Milford has a variety of shops, restaurants and pubs in its high street, which borders the village green.-Overview:Milford on Sea is village...

 in the English

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

 county of Dorset

Dorset

Dorset , is a county in South West England on the English Channel coast. The county town is Dorchester which is situated in the south. The Hampshire towns of Bournemouth and Christchurch joined the county with the reorganisation of local government in 1974...

.

At the end is a spit

Spit (landform)

A spit or sandspit is a deposition landform found off coasts. At one end, spits connect to land, and extend into the sea. A spit is a type of bar or beach that develops where a re-entrant occurs, such as at cove's headlands, by the process of longshore drift...

 which creates the narrow entrance to Christchurch Harbour

Christchurch Harbour

Christchurch Harbour is a natural harbour in the county of Dorset, on the south coast of England named after the nearby town of Christchurch.Two Rivers the Avon and the Stour flow into the Harbour at its northwest corner. The harbour is generally shallow and due to the tidal harmonics in the...

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Hengistbury Head is a sandstone

Sandstone

Sandstone is a sedimentary rock composed mainly of sand-sized minerals or rock grains.Most sandstone is composed of quartz and/or feldspar because these are the most common minerals in the Earth's crust. Like sand, sandstone may be any colour, but the most common colours are tan, brown, yellow,...

 headland which forms part of Southbourne

Southbourne, Dorset

Southbourne is a suburb of Bournemouth. It is the most easterly part of the borough, between Boscombe and Christchurch, Dorset. The area was previously known as Stourfield....

, the most easterly part of the Borough of Bournemouth

Bournemouth

Bournemouth is a large coastal resort town in the ceremonial county of Dorset, England. According to the 2001 Census the town has a population of 163,444, making it the largest settlement in Dorset. It is also the largest settlement between Southampton and Plymouth...

, Dorset

Dorset

Dorset , is a county in South West England on the English Channel coast. The county town is Dorchester which is situated in the south. The Hampshire towns of Bournemouth and Christchurch joined the county with the reorganisation of local government in 1974...

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Hengistbury Head forms the southern boundary of Christchurch Harbour

Christchurch Harbour

Christchurch Harbour is a natural harbour in the county of Dorset, on the south coast of England named after the nearby town of Christchurch.Two Rivers the Avon and the Stour flow into the Harbour at its northwest corner. The harbour is generally shallow and due to the tidal harmonics in the...

. The sand bar at the end of the Head is the main feature closing the harbour from the south, while a peninsula at Mudeford

Mudeford

Mudeford was originally a small fishing village in the borough of Christchurch, Dorset southern England, lying at the entrance to Christchurch Harbour. The River Mude and Bure Brook flow into the harbour there...

 closes the harbour from the north.
The region was originally named Hynesbury Head.