The us 89 archaeological project investigated 41 prehistoric sites located approximately 30 km north of flagstaff arizona all sites were on coconino national forest cnf land the project was conducted by desert archaeology inc for the. Sunset crater archaeology the history of a volcanic landscape introduction site descriptions part 1 ap30 1 mark d elson editor the us 89 archaeological project investigated 41 prehistoric sites located approximately 30 km north of flagstaff arizona all sites were on coconino national forest land. Sunset crater cinders were found on all project area sites an isopach map of cinder depth constructed for this project indicates that minimally the us 89 sites were covered with from 5 50 cm of volcanic material which had a significant impact on prehistoric settlement subsistence and economic systems. The history of a volcanic landscape introduction and site descriptions buy sunset crater archaeology the history of a volcanic landscape introduction and site descriptions by isbn 9781886398566 from amazons book store everyday low prices and free delivery on eligible orders up to 90 off textbooks at amazon canada plus free two day shipping. The us 89 archaeological project investigated 41 prehistoric sites located approximately 30 km 25 miles north of flagstaff arizona all sites were on coconino national forest cnf land specifically the peaks ranger district the project was