Carl Wark

A low, rugged gritstone promontory on Hathersage Moor that carries the remains of what is regarded as an Iron Age hill fort. The date is not certain, but it is believed to have been built somewhere between roughly 500 and 800 BC. What you see today is a natural rock platform with steep, near vertical sides and built-up defensive lines, ringed by heather moorland and crossed by worn paths. From the top the ground falls away in most directions, giving broad views across the moors and the Hope Valley and out to the gritstone edges.

The interest is as much tactical as scenic. The fort sits on a smaller, lower outcrop than neighbouring Higger Tor, which looks like a strange choice until you stand there: the gap is wide enough to be out of missile range from the higher ground, and the crag's sheer flanks made the site far easier to defend. Seeing that logic in the landscape is the point of the visit. The surrounding terrain, with huge boulders set among heather and cotton grass, also has a cinematic quality, and this stretch of moor was used as a location in the 1987 film The Princess Bride, with Higger Tor standing in the background.

Carl Wark is reached on foot across open moorland, and there are several sensible starting points rather than one official route. Walkers commonly begin from Upper Burbage or Burbage Bridge to the north and link the fort into a circular loop, and other routes come in from the Surprise View area or the Longshaw side to the south. Distance and effort vary a lot depending on which start and loop you choose, so plan the walk rather than assuming a set length. The final approach involves short sections of light scrambling and uneven footing to get onto the rock platform.

• Footwear matters: paths are sandy, rocky and uneven, with occasional small boggy patches after wet weather.
• Bring layers and weather protection. The approach crosses exposed upland ground where conditions can change quickly.
• Carry what you need. No facilities at the fort itself were positively verified, so sort water and food before you set off. The Longshaw area to the south has a cafe and toilets and is a reasonable place to build in a stop, though the walking distance from the fort depends on the route you take.

Visited on its own, the fort can feel understated next to the more dramatic tors nearby, and the remains take some looking at before they read as defences. It works far better as one stop on a circular walk taking in Higger Tor and the Burbage valley. Add to that the exposed ground, the boggy patches and the scramble onto the rock, and it is a place best approached as a moorland walk with real history attached rather than a quick roadside stop.