Image: Berger et al., 2023. The engraved symbols date to between 241,000 and 335,000 years old, but more testing will be done to get a more specific timeframe on when they were made.

"Indus Script Encodes Language, Reveals New Study Of Ancient Symbols." ScienceDaily. ScienceDaily, 30 April 2009. <www.sciencedaily.com / releases / 2009 / 04 / 090423142316.htm>.

As a new exhibition looks at the concept of the loop, Joobin Bekhrad discovers how one symbol had different meanings in ancient Egypt, Hindu mythology and Renaissance alchemy.