Obelisk Base in the Avenue on East of Road to New Hartley is a Grade II listed building in the Northumberland local planning authority area, England. First listed on 15 July 1987. Monument.

Obelisk Base in the Avenue on East of Road to New Hartley

WRENN ID
waiting-window-azure
Grade
II
Local Planning Authority
Northumberland
Constituency
Cramlington and Killingworth MP: Emma Foody (Lab)
Country
England
Date first listed
15 July 1987
Type
Monument
Address
Obelisk Base in the Avenue on East of Road to New Hartley, Seaton Valley
OS grid reference
NZ 316 763
Coordinates
55.0802, -1.50514
Source
Historic England listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The obelisk base, dating from the 18th century, is located on the east side of the road to New Hartley in Seaton Delaval. It is made of squared stone and features a square structure with chamfered and moulded plinths, as well as a moulded cap. The current height of the base is approximately 4 metres. This obelisk is said to mark the spot where Admiral George Delaval had a fatal fall while riding on June 22nd, 1723.

Local climate

Obelisk Base in the Avenue on East of Road to New Hartley receives an average of 770 mm of rain a year. This makes it drier than 63% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 80% of listed buildings.

It experiences an average of 22 freeze-thaw cycles a year, fewer than 77% of listed buildings. Of these, 12 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

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