An extreme drought in Brazil's Amazon has caused water levels in the river to drop, revealing rock formations with Ancient Engravings of human forms that may date back 2,000 years. The engravings, usually submerged, have delighted scientists and the public but also raised concerns about the future of the river. The drought has severely reduced river levels, affecting transportation and supplies in the region. The dry season has been worsened by El Nino and climate change. The engravings, found in Praia das Lajes, are of human faces and provide valuable insight into the region's first inhabitants.

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