Maize collected from Pit Feature 7. The uncorrected date of 2720 +/- 265 (Simmons 1986:79) has been corrected using Stuiver and Reimer's formula for fractionation correction (http://intcal.qub.ac.uk/calib/fractionation.html) and a maize d13C value of -10.0 +/- 2.