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can be seen in the Anivorano-Ampasimbe region, which is located at the confluence of two major rivers, Vohitra and Rianila. These
rivers were natural routes used to travel inland from the coast. When the area of exploration was enlarged, their roles became
obvious, as more archaeological sites were found in the two municipalities of Anivorano and Brickaville.
Ambinaninony, with a river terrace site in the background, on the right.