[2] A large Bronze Age round cairn or barrow was built later, to the east of the henge, using material taken from the earth bank.

It was excavated in 1845 and found to contain a cremation burial, flint and bone artefacts, and two pots similar to Late Neolithic Peterborough ware[2] now in the care of Weston Park Museum.

[4] Arbor Low is part of a larger complex, and is linked by an earth ridge to the earlier Neolithic oval barrow of Gib Hill 320m away.

[5] The bank and ditch of the henge, as well as its two entrances, were probably established in the Late Neolithic period, with the stones added later, sometime before 2000 BCE.

[2] Small stone markers engraved VR and GR (for Victoria Regina and Georgius Rex) still stand around the henge, demarcating the protected area.