Devil's Dyke, Hertfordshire

It has possible associations with Julius Caesar's second invasion of Britain (54 BC) Historic England refers to the Devil's Dyke as being part of a much larger site.

[1] Some other sources are more specific as to what sort of earthwork it may be, suggesting that the dyke protects one side of an oppidum (a large fortified Iron Age settlement) covering about 40 ha.

According to a plaque at one entrance to the dyke, the land was presented by Lord Brocket in 1937 on the occasion of the coronation of King George VI and Queen Elizabeth.

[1] The site is a candidate for the strongly defended place where Julius Caesar fought Cassivellaunus in 54 BC, as described in his firsthand account De Bello Gallico.

The sign at the entrance to the Dyke states that it is the probable place (based on the assertions of Sir Mortimer), which has led to the claim often being repeated as an established fact.

The fortifications were probably erected by King Cunobelinus to define areas of land around their tribal centre at Verlamion – the predecessor of the later Roman city of Verulamium.