1GL Bolt: Crayke Castle   

Bolt in West corner and South face of Crayke Castle ; 4.62 ft. above surface [1GL, Selby to Newcastle-upon-Tyne, Branch Line from Tollerton to Easingwold, Mark No. 20]; BOLT CRAYKE CAS S ANG SE FACE (115.5537m ODN, 1.3m AGL).

Location
Grid reference: SE 5590 7067.
Landranger 100: Malton & Pickering, Helmsley & Easingwold.
Structure: Other.
Waypoint: BT0770.

Neighbouring Bench Marks

BOLT	Crayke, Church 121.66m to the east.
BM	Easingwold, Long Street 3.11km to the southwest.
BOLT	Easingwold, Church 3.42km to the west.
BOLT	Stillington, Church 3.71km to the southeast.
BM	Nineveh 4.10km to the west.

The nearest fundamental bench mark is Bulmer, 14.80km to the east.

First Primary Levelling, England & Wales (1840-60)
This bench mark was used during the First primary levelling, England & Wales, and was levelled with a height of 379.3970 feet [115.6402 metres] above mean sea level (Liverpool datum). It was included on the Selby to Newcastle-upon-Tyne (Branch Line from Tollerton To Easingwold) levelling line. The surveyor's description was Bolt in West corner and South face of Crayke Castle ; 4.62 ft. above surface.