Have you seen anyone respectable in the field suggest/insinuate that? Its just that I guess I never thought of it that way. I always though they meant that some undetermined number of tribes left their seers and shamans here at this main temple and the tribes went out and gathered what they could and came back.
Maybe once a month our tribes return on the new moon(?) to receive our prophecies and leave a deer and a basket of apples for Locnar the Eyebiter so that he can get back to work with the rest of the initiates on our behalf.
I believe it originated with Klaus Schmidt, the original excavator and one may as well say, the discoverer of the site.