Left panel: Vestige of a human-made earthen causeway built across a seasonally flooded savanna, from one area of well-drained forest to another, near Baures, in the Llanos de Mojos, Bolivia. Right panel : Vestige of a pre-Columbian earthen fish weir (V-shaped earthworks joined by linear dikes) in the same site.
Bruno Roux
CC BY 4.0
<a rel="nofollow" class="external free" href="http://www.scielo.br/scielo.php?script=sci_arttext&amp;pid=S0001-37652019000600607&amp;lng=en&amp;nrm=iso&amp;tlng=en">http://www.scielo.br/scielo.php?script=sci_arttext&amp;pid=S0001-37652019000600607&amp;lng=en&amp;nrm=iso&amp;tlng=en</a>