Latitude: 53.0568 / 53°3'24"N
Longitude: -4.2419 / 4°14'30"W
OS Eastings: 249846
OS Northings: 353407
OS Grid: SH498534
Mapcode National: GBR 5K.CG1F
Mapcode Global: WH43T.TF7G
Plus Code: 9C5Q3Q45+P6
Map layers use either open data or maps from the Ordnance Survey and Maptiler APIs.
Historic map layers are currently experimental and may not necessarily be available all the time.
If you want to view the location on an external mapping site, then follow one of these links:
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NLS (Historic)
Entry Name: Tunnel Portal and Tunnel
Listing Date: 21 July 2000
Last Amended: 21 July 2000
Grade: II
Source: Cadw
Source ID: 23689
Building Class: Industrial
ID on this website: 300023689
Location: Located in the hillside to the north of Talysarn Hall.
County: Gwynedd
Community: Llanllyfni
Community: Llanllyfni
Locality: Nantlle
Traditional County: Caernarfonshire