Mysterious symbols in cave paintings may be earliest form of writing

Credits: Mysterious symbols in cave paintings may be earliest form of writing A 21,500-year-old cave painting depicting an aurochs, an extinct cattle species, in the Lascaux caves in France. Notice the four dots (within the digital yellow circle), which may have had a special meaning for ice age peoples. (Image credit: JoJan; Wikimedia Commons; (CC BY 4.0))