From
LiveScience.com:
The remnants of what could be an ancient corral for keeping horses have been unearthed in northern Kazakhstan. The finding suggests the Botai culture living in the region 5,600 years ago didn't just hunt the creatures for meat, but were domesticating them, too.
Researchers found the remnants of 54 ancient homes and dozens of fence-post moulds where vertical posts once stood at a site called Krasnyi Yar. Some of the moulds were arranged circularly, as might be expected of a corral.
Soil in the area had chemical compositions matching what would be expected from Earth once enriched by horse manure, which is abundant in phosphorous, potassium and nitrogen. Soil at Krasnyi Yar was rich in all of these elements except nitrogen. This, too, would be expected if the soil was old, since nitrogen typically dissolves over time into groundwater and the atmosphere.
The Botai are not thought to have kept sheep or cattle, so the researchers ruled these animals out as sources of the manure, and the geochemical signature of the samples did not match human wastes.
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This just blows me away. Almost 6,000 years ago. I'm not as big a fan of history as some but lately I've been intrigued by prehistoric civilizations, mostly in South America. One of the popular definitions of prehistoric is "a time before written records were kept". Sumerian writings go back to somewhere around 3,500 BC, about 5,500 years ago. But of course, it's not like humanity went from flea-picking and eating to a full blown writing system overnight. There's a sort of prehistoric preparatory period, probably 3-4,000 years before and leading up to written records (~9,000 years ago) which fascinates me because even though written language didn't exist (that we know of) there must have been a huge wealth of oral knowledge passed on about things like cultivation of crops, medicine, religions and (as above) domestication of animals.
Is there a term besides "prehistoric civilizations" which describes mankind for a few thousand years before the written word appeared? Kind of like certain periods (Jurassic, Mesozoic, etc.) describe much earlier times in Earth's history? I have a very poor archaeological vocabulary. :-(
PB