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arrow-up13external-linkDrought in Brazil's Amazon reveals ancient engravingsphys.orgbot@lemmy.smeargle.fansMB to Hacker News@lemmy.smeargle.fans · 11 months agomessage-square0fedilinkfile-textcross-posted to: noticias@lemmy.eco.brarchaeology@mander.xyzhackernews@derp.fooarchaeology@mander.xyz