Keywords: ERODED SANDSTONE, PART OF INDIAN RUINS DATING FROM 1100 TO 1300 A.D - NARA - 544907.jpg Scope and content General notes 544907 Local identifier 412-DA-2414 Environmental Protection Agency 12/02/1970 - NARA-Author Norton Boyd 1936- Photographer 1111093 <br /> Hovenweep United States North and Central America deserted settlement 3250918 <br /> Still Picture Records Section Special Media Archives Services Division NWCS-S National Archives at College Park 8601 Adelphi Road College Park MD 20740-6001 05/1972 Record group Record Group 412 Records of the Environmental Protection Agency 1944 - 2006 Record group ARC 708 DOCUMERICA The Environmental Protection Agency's Program to Photographically Document Subjects of Environmental Concern compiled 1972 - 1977 Series ARC 542493 File unit File unit ARC Variant control numbers Agency-Assigned Identifier 041/14/002414<br /> NAIL Control Number NWDNS-412-DA-2414 Other versions <gallery> File ERODED_SANDSTONE _PART_OF_INDIAN_RUINS_DATING_FROM_1100_TO_1300_A D_-_NARA_-_544907 tif tif File ERODED_SANDSTONE _PART_OF_INDIAN_RUINS_DATING_FROM_1100_TO_1300_A D_-_NARA_-_544907 jpg jpg </gallery> NARA-cooperation PD-USGov Boyd Norton Hovenweep National Monument Erosion landforms |