A similar situation existed in San Elizario, Texas.  There seemed to
be a prehistoric site atop a historic one.  Most of El Paso's Lower
Valley (the location of San Elizario) has been re-elevated at some
point.  In this case, a low spot had been filled ca. late 1880s by
taking dirt from a high spot that happened to contain a prehistoric
site.  Fortunately, the lead researcher was able to document the
relocation of the site.

Bill

Mark Henderson wrote:
> Along these lines, there is now a major protohistoric Rio Grande Glaze A
> Pueblo midden in Ely, Nevada about 650 miles WNW of where it was located
> in 1977 or so.  One of our local residents at the time apparently had to
> transport a dump truck from the Albuquerque area to Ely and figured it
> was wasteful to drive it empty.  Thinking there might be a market in
> pueblo artifacts, he loaded the dump truck with material from a pueblo
> site that was being used as fill material (probably north of
> Albuquerque), drove it to Ely and dumped it in his back yard.  There
> wasn't much of a market for the material, but there is now a puebloan
> site in Ely.  Someday it will probably be evidence of the Ancestral
> Pueblo incursion into Ely and the basis for establishment of aboriginal
> Pueblo title to the City of Ely.