FIGURE 3. Oblique photograph of a fish weir and artificial ponds between forest islands in the savannas of Baures.
From the following article:
An artificial landscape-scale fishery in the Bolivian Amazon
Clark L. Erickson
Nature 408, 190-193(9 November 2000)
doi:10.1038/35041555

Fish weirs are the zigzag structures, lower left to upper right; artificial ponds are the circular features surrounded by palms (approximately 20 m in diameter). The diagonal feature (upper left to lower right) is a contemporary path.
