{"id":4183,"date":"2018-02-02T08:04:13","date_gmt":"2018-02-02T13:04:13","guid":{"rendered":"http:\/\/www.andrewlawler.com\/?p=4183"},"modified":"2024-12-21T12:08:09","modified_gmt":"2024-12-21T17:08:09","slug":"spy-satellites-revealing-afghanistans-lost-empires","status":"publish","type":"post","link":"https:\/\/www.andrewlawler.com\/content\/spy-satellites-revealing-afghanistans-lost-empires\/","title":{"rendered":"Spy satellites are revealing Afghanistan\u2019s lost empires"},"content":{"rendered":"<div id=\"attachment_4186\" style=\"width: 709px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4186\" class=\"wp-image-4186 size-full\" src=\"http:\/\/www.andrewlawler.com\/website\/wp-content\/uploads\/2017\/12\/ca_1215NID_Afghan_Caravanserai_online.jpg\" alt=\"\" width=\"699\" height=\"393\" \/><p id=\"caption-attachment-4186\" class=\"wp-caption-text\">A satellite image shows a 17th century caravanserai.<br \/>photo: DIGITALGLOBE, INC.<\/p><\/div>\n<p>For archaeologists, Afghanistan is virtually off-limits for fieldwork, as Taliban forces battle the Kabul government in far-flung provinces and security remains tenuous even in the capital. Yet U.S. and Afghan researchers are now finding thousands of never-before-cataloged ancient sites in the country, which for more than a millennium served as a crucial crossroads linking East and West. The discoveries promise to expand scholars\u2019 view of long-vanished empires while giving the battered nation a desperately needed chance to protect its trove of cultural heritage.<\/p>\n<p>In a collaboration funded by the U.S. Department of State, archaeologists are analyzing commercial satellite data, along with U.S. spy satellite and military drone images, which offer a fine-grained view of remote sites that are too dangerous for researchers to visit. At a meeting here last month of the American Schools of Oriental Research, team members said they have more than tripled the number of published archaeological features in Afghanistan, to more than 4500. The discoveries range from caravanserais, huge complexes designed to house travelers and built from the early centuries B.C.E. until the 19th century, to networks of ancient canals invisible from the ground. Meanwhile, octogenarian archaeologists are emerging from retirement to add information from decades-old fieldwork to the site inventory.<\/p>\n<blockquote><p>\u201cThe capability to explore a relatively little known region efficiently and safely is really exciting,\u201d said David Thomas, an archaeologist at La Trobe University in Melbourne, Australia, who has done remote sensing work in Afghanistan but is not a member of the mapping team. \u201cI\u2019d expect tens of thousands of archaeological sites to be discovered. Only when these sites are recorded can they be studied and protected.\u201d<\/p><\/blockquote>\n<p>The Afghan Heritage Mapping Partnership is the brainchild of archaeologist Gil Stein of the University of Chicago (UChicago) in Illinois. In 2014, he and other cultural heritage experts met with Afghan President Mohammad Ashraf Ghani, who earned a Ph.D. in anthropology from Columbia University and served as the World Bank\u2019s top anthropologist. Ghani called for a detailed effort to map relics of the country\u2019s past. \u201cHe said cultural heritage is a key to economic development and, in a country so divided, critical for a strong national identity,\u201d Stein recalls.<\/p>\n<p>The following year, the State Department awarded a $2 million grant to Stein\u2019s team, and gave it access to U.S. government imagery that is often an order of magnitude more precise than publicly available images.<\/p>\n<p>A satellite image of the walled city of Sar-O-Tar, first built in the early centuries C.E., which is now being reclaimed by sand.<\/p>\n<div id=\"attachment_4185\" style=\"width: 310px\" class=\"wp-caption alignright\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4185\" class=\"size-medium wp-image-4185\" src=\"http:\/\/www.andrewlawler.com\/website\/wp-content\/uploads\/2017\/12\/ca_1215NID_AHMP_SarOTar_Inset-300x214.jpg\" alt=\"\" width=\"300\" height=\"214\" \/><p id=\"caption-attachment-4185\" class=\"wp-caption-text\">A satellite image of the walled city of Sar-O-Tar, first built in the early centuries C.E., which is now being reclaimed by sand.<br \/>photo: DIGITALGLOBE, INC.<\/p><\/div>\n<p>Among the team\u2019s recent finds are 119 caravanserais from the late 16th and early 17th centuries spaced approximately every 20 kilometers\u2014roughly a day\u2019s journey with a large caravan\u2014across Afghanistan\u2019s forbidding southern deserts. The enormous mudbrick buildings typically extended the length of a U.S. football field on each side and housed hundreds of people and thousands of camels. They line routes that linked the capital of the powerful Safavid Empire, Isfahan, in what is now Iran, with the Mughal Empire that then dominated the Indian subcontinent.<\/p>\n<p>The caravans carried enormous amounts of silks, gems, spices, and woods from India, plus porcelain from China and less exotic cargo such as dried fish, says Emily Boak, a UChicago heritage analyst. The regularity of caravanserai construction suggests an ambitious and centrally sponsored effort to ensure a safe and steady flow of goods, she noted. That contradicts previous ideas that the Safavid Empire\u2014which stretched from Turkey to Pakistan and made Shia Islam its official religion by the 17th century\u2014was in decline in this period.<\/p>\n<p>\u201cThere is a long-standing view that once the Portuguese entered the Indian Ocean\u201d\u2014opening sea lanes to Europe in the 16th century\u2014\u201cno one bothered to cross Central Asia,\u201d said project manager Kathryn Franklin, also of UChicago. \u201cBut this shows a huge infrastructure investment of the Safavids a century later.\u201d<\/p>\n<p>To the north, around the Balkh Oasis bordering Uzbekistan, UChicago\u2019s Anthony Lauricella and Emily Hammer, now at the University of Pennsylvania, examined extremely high resolution satellite and aerial images that can spot subtle changes in topography as small as 10 centimeters across and 50 centimeters high. The images, obtained from the U.S. Army Corps of Engineers, revealed hundreds of settlements built over more than a millennium as the Balkhab River shifted course from the early centuries B.C.E. to medieval times and people followed the water in this otherwise arid landscape. Decades ago, Soviet archaeologists noted 77 large settlements there, but the UChicago group counted more than 1000 ancient villages, towns, or cities, suggesting that the area was far more densely populated over an extended period than once thought. The data will help archaeologists trace a central locus of the Silk Road linking Europe and China. By matching a handful of dated sites with the movement of the river in time, they can even begin to date the settlements.<\/p>\n<div id=\"attachment_4184\" style=\"width: 310px\" class=\"wp-caption alignright\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4184\" class=\"size-medium wp-image-4184\" src=\"http:\/\/www.andrewlawler.com\/website\/wp-content\/uploads\/2017\/12\/1215ID_afghanistanMap_DRUPAL-300x246.png\" alt=\"\" width=\"300\" height=\"246\" \/><p id=\"caption-attachment-4184\" class=\"wp-caption-text\">Mapping Afghanistan\u2019s archaeological riches\u200b<br \/>To catalog ancient sites, archaeologists are putting together data from remote sensing images, for example from around the city of Balkh, and information from decades-old fieldwork in the Sistan and Helmand areas.<br \/>V. ALTOUNIAN\/SCIENCE<\/p><\/div>\n<p>Old, unpublished fieldwork is adding to the bounty. In the 1970s, a U.S.-Afghan team led by anthropologist William Trousdale of the Smithsonian Institution in Washington, D.C., surveyed 40,000 square kilometers of the Sistan and Helmand regions (see map, right). But the 1979 Soviet invasion halted their work. Given the researchers\u2019 advancing age, Trousdale, now 87, is overseeing an effort to analyze and publish 15,000 photos and dozens of field notebooks stored for decades in his garage. \u201cWe are trying to finish a project started half a lifetime ago,\u201d said team member Mitch Allen of the Smithsonian.<\/p>\n<p>Most of the 200 sites they pinpointed were built during the Parthian Empire, which flourished at the same time as Rome, in the early centuries B.C.E. and C.E. Features include an extensive canal system that likely boosted crop yields for nearly a millennium. And within just one valley, the team found a variety of religious buildings, including Buddhist stupas, Zoroastrian fire temples, and Hellenistic sanctuaries with both Greek and Aramaic characters written on stone slabs. The finds suggest that the mostly Zoroastrian Parthians tolerated a host of traditions.<\/p>\n<p>To prevent or at least limit destruction of sites like these, Stein is overseeing construction of a geographical information system for the Afghan Institute of Archaeology in Kabul and Kabul Polytechnic University, which could guide future development and serve as a model for other central Asian nations. \u201cThis technology for cultural heritage management is very crucial,\u201d said Noor Agha Noori, director of the institute.<\/p>\n<p>The Taliban hurt Afghanistan\u2019s cultural heritage in the past, for example by smashing the great Bamiyan Buddhas in 2001 and destroying artifacts in the National Museum in Kabul. One of the surprises of the UChicago effort is that destruction of ancient sites today is actually worse outside of Taliban-controlled territory. The new threat is development, from mines to roads, plus old-fashioned looting. Noori hopes the mapping project will give archaeologists a role in protecting Afghanistan\u2019s past as it struggles to create a more peaceful and prosperous future.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sciencemag.org | December 13, 2017<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[22],"tags":[],"class_list":["post-4183","post","type-post","status-publish","format-standard","hentry","category-science-magazine"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Spy satellites are revealing Afghanistan\u2019s lost empires &#8226; Andrew Lawler<\/title>\n<meta name=\"description\" content=\"Sciencemag.org | December 13, 2017\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sciencemag.org\/news\/2017\/12\/spy-satellites-are-revealing-afghanistan-s-lost-empires\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Spy satellites are revealing Afghanistan\u2019s lost empires &#8226; 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