Elders ging het over teer en pek voor botenbouw, vanochtend kwam dit voorbij:
Neanderthal adhesive manufacturing site found in Gibraltar cave
Cut into a Gibraltar cliff face overlooking the Alboran Sea, a cave opening leads back in time to one of the earliest manufacturing sites on the planet—a Neanderthal-built tar distillation oven hidden for 65,000 years.
phys.org