Milecastle 10

Milecastle 10
Milecastle 10 lies near the B6528 road near Throckley
Milecastle 10 Milecastle 10 shown within Tyne and Wear
OS grid reference	NZ16476676
Coordinates	54°59′43″N 1°44′38″W / 54.995197°N 1.744027°W / 54.995197; -1.744027Coordinates: 54°59′43″N 1°44′38″W / 54.995197°N 1.744027°W / 54.995197; -1.744027
List of places UK England Tyne and Wear

Milecastle 10 (Walbottle Dene) was a milecastle of the Roman Hadrian's Wall. It is located near to the modern village of Throckley in Tyne and Wear, northern England. Much of the milecastle lies beneath a road but partial remains of the north wall can be seen in the garden of Dene House. It has been excavated several times and its walls located, though the remains have been "considerably damaged by ploughing". Only one of the two associated turrets has been located and excavated.

Milecastle 10 was a long-axis milecastle with Type IV gateways. Such milecastles were thought to have been constructed by the legio XX Valeria Victrix who were based in Deva Victrix (Chester). The usually straight Hadrian's Wall changes direction in this area, making a 20 degree turn just before it crosses a Dene (valley) and heading towards the Great Hill at Heddon-on-the-Wall.

The milecastle measures 78 feet 2 inches (23.83 m) long north to south and 67 feet (20 m) east to west with walls approximately 10 feet (3.0 m) wide. The north gateway survives in the front garden of Dene House and consists of twelve foundation slabs with three stone blocks lying on top. One of the blocks is marked with an asterix, two of them contain pivot holes for a gate and one shows signs of a lewis-hole. The southern part of the milecastle is visible only as a 0.4m high mound in a field and part of the ditch is also visible.

Each milecastle on Hadrian's Wall had two associated turret structures. These turrets were positioned approximately one-third and two-thirds of a Roman mile to the west of the Milecastle, and would probably have been manned by part of the milecastle's garrison. The turrets associated with Milecastle 10 are known as Turret 10A and Turret 10B.