The small mounds that you are finding may be rock cairns left after the
hillside was cleared. We often find large rock cairns after a field has been
cleared for plowing or building. As the slope increases, there were probably
fewer rocks to clear, which is why the mounds get smaller.
Anita Cohen-Williams; Reference Services; Hayden Library
Arizona State University, Tempe, AZ 85287-1006
PHONE: (602) 965-4579 FAX: (602) 965-9169
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