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"the regional climate began to improve about 6000 • <br />radiocarbon years ago. Increased precipitation <br />permitbyd man to return to all but the driest of <br />the environments he had previously abandoned. <br />Between 6000 and 5000 B.P., he re-entered the <br />plains of Saskatchewan, the foothills of Montana <br />and Wycaning, and the mountains of central Colorado" <br />(Benedict and Olson, 1973, p. 326; e~hases added). <br />The evidence is scanty, but we might posit that SRT139 represents an <br />occupation of an ~anvirorrt~ntal zone that previously had been less than <br />hospitable and possibly unoccupied for many generations. This pattern <br />on the western slope of the Colorado Rockies was incident with that <br />recx~giiized by Benedict and. Olson on the eastern slope. Verification of <br />this proposition is certainly wntingent upon the recovery of additional <br />evidence but it does have viability. <br />r 1 <br />LJ <br />• <br />56 <br />