Record low water reveals petroglyphs in Brazil
Record low water in the Rio Negro of Brazil has revealed petroglyphs that were previously under water. The story was originally reported by Reuters (go here to see the story and images) but has appeared in multiple news outlets. One of the best is in the Guardian (here). The images are not well studied but thought to be of similar age to other petroglyphs in the Amazon -1,000 to 2,000 years old.
