The tripoint of County Durham, Cumberland and Northumberland is the watershed on Slate Hill, Nenthead. In the photo below the tripoint can be seen at the post to the left of the photo. A cairn is slowly being built to the right of the post as the land around the post is being eroded. Cumberland is to the top left, Northumberland top right and County Durham to the bottom of the photo.
- Counties: County Durham – Cumberland – Northumberland
- Tripoint Number: 6
- Dates Slept At: 29/30 June 2015
- Slept In: Bivy Bag
- Height: 659m
- Grid Reference:54°47’28“N, 2°18’43“W