– the nearest source is the Baltic. It would have been traded over long distances. The necklace was discovered as part of a 4,000‑year‑old burial. The hill fort was built in and used throughout the Iron Age, as demonstrated by finds from the site which span the period. Occupants lived in roundhouses, and habitation of the site was spread over a long period. In common with many other hill forts, the site was probably divided into separate areas for habitation, industry, and agricultural activities such as storage, although the layout of these areas changed over time. Excavations indicate that the area enclosed by the inner ditch was used mainly for habitation, while the area between the inner and outer ditches was agricultural. The separation was not necessarily fixed as some of the outer area shows signs that it was used as a living space. The Roman fort of Melandra is nearby. Fragments of glass, possibly Roman in origin, and shards of pottery which date to the 1st and 2nd centuries AD, indicate the site was used in the Romano-British period. However no Roman structures have been discovered, and the nature of Roman activity at the site is a source of speculation. The position of the hilltop indicate that it was easily defended; however, local finds indicate it was a high-status settlement rather than a military outpost unless a similar feature was located nearby. One reason that Roman structures have not been identified is that the Romano-British inhabitants may have used roundhouses rather than buildings of a typically rectilinear Roman style. This would make them more difficult to differentiate from Iron Age roundhouses and would imply a continuation of local culture rather than an imposition of Roman style. It is also possible that Romans simply influenced the area, rather than actively occupying the site. The site was later abandoned and forgotten until its rediscovery in the 1990s. Investigation With sites such as Danebury where there is no modern habitation or built environment, extensive excavations can be undertaken to establish the general layout. The modern settlement of Mellor extends over the Iron Age hill fort, which restricts archaeological investigation. A geophysical survey was performed to establish the extent of the settlement; methods such as magnetometry and ground-penetrating radar were successful in identifying the eastern and northern sections of the ditch encircling the site. Excavations have been concentrated around the Old Vicarage. By