The site is well preserved despite quarrying of the area during the 17th to early 20th centuries, as well as military training exercises during the 20th century. The remaining earthworks have been designated a Scheduled Monument, and the site is owned by the National Trust. Since 2009, the trust has been removing trees, scrub and bracken from the site, as the roots damage the earthworks. Animal burrows are another threat, and footpath erosion from visitors is also a problem, as the Sandstone Trail cuts across the earthworks.