Additional Notes on Prehistoric Wells at the Clovis Site

Abstract Portions of two recently observed prehistoric wells at the Blackwater No. 1 locality in Roosevelt County, New Mexico, furnish additional data on features first described by Evans (1951). These wells were exposed by gravel-quarrying operations which have removed the last major remnant of ancient pond deposits containing artifacts of the Llano and Folsom cultures and the Portales complex. The time of well-digging occurred during an erosional interval between Beds 3a and 4; and on the basis of comparisons with the Lubbock Reservoir site, this interval is equated with the Altithermal stage of Antevs, and it is suggested that the wells were dug sometime between 4000 and 5000 years ago.