this is the section from Herodotus' Histories that contains the oldest known written evidence of psychoactive cannabis use; this would be about 300 years later than this physical evidence

Now the Scythians take the seed of the hemp and they go under their mats and then they throw the seed on the red-hot stones in the fire. So thrown it smoulders, and it produces such vapor that no Greek vapor bath might exceed it. And delighted by the vapor bath, the Scythians howl.