This research problem is older than the discipline of archaeology itself. Were the `Beaker people´ immigrants or indigenous to prehistoric Britain? Nineteenth century antiquarian barrow-diggers observed that the wide-headed (brachycephalic) skulls of Beaker burials were distinguishable from the narrow (dolichocephalic) skulls within Neolithic long barrows, and attributed these to different populations. Since then, theories of a migrant `Beaker folk´ have been contested by alternative theories which interpret the distinctive Beaker pots and associated material culture as part of a Europe-wide `Beaker package´ or cultural pattern adopted by local communities.

via Beaker isotope project – Research – Archaeology – The University of Sheffield.