Giant's Hill, Cambridge Travel Guide

Giant’s Hill, also known as Rampton Castle, is an unfinished mid-12th-century earthwork begun by King Stephen’s forces to contain Geoffrey de Mandeville during The Anarchy. Construction halted after de Mandeville’s death at Burwell in 1144. The moat cuts through earlier medieval village crofts, preserving house platforms and part of the associated field system. Later use as a de Lisle residence is suggested by a 1270 market grant and licensed chapel. Home Guard trenches dug in 1942 exposed 15th-century rubble; the concrete gun-emplacement base remains visible on the island.

The site occupies flat Ampthill Clay fen-edge pasture at 5–7 m above OD on the western edge of Little North Fen. The central island is a low trapezoidal platform only 1.5 m high, surrounded by a ditch up to 40 m wide and 2 m deep that usually holds standing water. An outer spoil bank runs along the north side and a ramped causeway crosses the southwest corner. The whole monument sits within a larger scheduled area of ridge-and-furrow and croft earthworks immediately east of All Saints’ churchyard.

Access is informal and self-guided. Walkers follow the grassy perimeter, cross the wooden walkway onto the platform, read the information board and photograph the moat and waterside trees. No indoor interpretation, staffed facilities or ticketed circuit exist. The atmosphere remains quiet and rural; livestock may graze the surrounding pasture. Most visitors spend 15–45 minutes before continuing to the church or village. The subtle earthworks reward prior reading or close attention rather than dramatic height.

From central Cambridge the site is 6–8 miles north via Histon or Cottenham. Driving takes 15–25 minutes; village roads are narrow and parking is informal street-side near the church or village green. Stagecoach service 8 reaches Cottenham in 30–40 minutes, after which a flat 1.5-mile walk completes the journey. Cycling on level fen roads takes 30–50 minutes. Direct buses into Rampton itself are limited.

The site is open year-round with no admission charge. After rain the clay becomes muddy and the moat fuller; waterproof footwear is advisable. No toilets, café or shelter stand on the earthwork, though All Saints’ Church and The Black Horse pub lie a few minutes’ walk away. The single information board and wooden walkway are the only formal provisions.