The houses, straggling in all directions, were dominated by the two ancient types described by Tacitus, the longhouse and the sunken hut. Each occupied a small plot bounded by hedges, fences, or ditches.
As a student in archaeology this really rustles my jimmies. Might read on later :p
Also, I think your citation is incorrect, their surname is
Gies. And the book dates back to 1991, so perhaps rather outdated.