Sky News: [2] Far from being a pristine wilderness, some regions of the Amazon have been profoundly altered by humans dating back 10,000 years, say researchers.
[3] An international team found that during this period, crops were being cultivated in a remote location in what is now northern Bolivia.
[4] The scientists believe that the humans who lived here were planting squash, cassava and maize.
[5] The inhabitants also created thousands of artificial islands in the forest.
[6] The end of the last ice age, around 12,000 years ago, saw a sustained rise in global temperatures that initiated many changes around the world.
[7] Perhaps the most important of these was that early civilisations began to move away from living as hunter-gatherers and started to cultivate crops for food.
[8] Researchers have previously unearthed evidence that crops were domesticated at four important locations around the world.
[9] So China saw the cultivation of rice, while in the Middle East it was grains, in Central America and Mexico it was maize, while potatoes and quinoa emerged in the Andes. [10] Now scientists say that the Llanos de Moxos region of southwestern Amazonia should be seen as a fifth key region.

The area is a savannah but is dotted with raised areas of land now covered with trees.