Rock Island is the location of two platform mounds. One, the Rock Island Mound, is currently under water, but the other sits high and dry on an exposed peninsula known as Bass Point. The Bass Point Mound (U:8:23/177) was probably built near the end of the Roosevelt Phase at around 1260 AD and was abandoned shortly after. Thus, the Bass Point Mound offers a glimpse of the early beginnings of platform mound construction in Tonto Basin.
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6/24/94 - phm