Highstones is a scheduled ancient monument - a roman fortlet just to the north of the probable roman road up Longdendale

"The Roman fortlet 320m east of Highstones is a particularly rare and well preserved example of this type of monument in Derbyshire. The small scale quarrying of sections of the rampart and platform does not detract from the importance of the site or the archaeological potential of the monument. Deposits in the base of the ditch, the makeup of the rampart, the buried land surface beneath the rampart and any sub-surface features will preserve important artefactual and ecofactual material. Such material is important to the understanding of the construction and use of the fortlet as well as the impact of the Roman occupation on the wider landscape."

Highstones map

and the plan...

Highstones plan