8 ILLUSTRATIONS 



30. a, Tower above cavate storehouses, Mancos Canyon, below bridge, b, Tower on 



mesa between eroded cliffs and bridge over Mancos Canyon, on Cortez Ship- 

 rock Road. 



31. a, Tower above cavate storehouses, Mancos Canyon, below bridge, b, Eroded shale 



formation in which are small walled cavate storehouses. 



32. a, Reservoir near Picket corral, showing retaining wall, b, Kiva, Unit-type 



House, Square Tower Canyon. 



33. Pictographs, Yellow Jacket Canyon. 



TEXT FIGURES 



Page 



1. Ground plan of Aztec Spring Ruin 26 



2 . Ground plan of Wood Canyon Ruin 32 



3. Metes and bounds of Emerson Ruin 34 



4. Schematic ground plan of Emerson Ruin 35 



5. Ground plan of Unit-type House in cave 39 



6. Square Tower Canyon 45 



7. Ground plan of Hovenweep House 10 



8. Ground plan of Hovenweep Castle 47 



9. Ground plan of Twin Towers 50 



10. Ground plan of Unit-type House 51 



11. Holly Canyon Ruins 52 



12. Horseshoe (Hackberry) Canyon 53 



13. Ground plan of Horseshoe House 54 



14. Ground plan of Davis Ruin 55 



15. Ground plan of Lion House 55 



16. Ground plan of ruin with towers in McLean Basin 56 



17. Doorway in Round Tower, McLean Basin 57 



18. Megalithic stone inclosure, McElmo Bluff 61 



