00:00Ancient arrowheads have secret markings, breaking what we thought we knew about history.
00:05Found in Turkey, these 9,000-year-old obsidian tips bear strange cuts.
00:09They aren't for better hunting.
00:12Archaeologists are baffled.
00:13Were these secret symbols, tribal signs, a forgotten language?
00:17This discovery hints early humans had complex thoughts beyond survival.
00:22It's a huge puzzle.
00:23Unraveling these ancient mysteries could reshape our view of early human symbolism.
00:28Find more in the Lincoln bio.
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