Vol. 43 / No. 3
By: John H. Walker
Work Parties and Raised Field Groups in the Bolivian Amazon
The Amazon River moves more water and sediment than any other river in the world, and at the mouth of […]
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Vol. 54 / No. 2
By: John H. Walker
Hidden Earthworks in the Forests of the Bolivian Amazon
The Andes and the coast of Peru are famous for spectacular places and things: the mountaintop city of Machu Picchu, […]
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