Two Solid Gold Bongs where found in Russia. They are both about 2500 years old and Where used to smoke both Marijuana and Opium. I also read that 5000 years ago people would frequent Hash Bars. 8000 year old hash was also found in Egypt. Make us wonder how long has Marijuana been used my humanity and why in the last 100 years has become a big no no. The link below expands on the Gold Bong Story .
and the link below here is about humanities obsession with mind bending substances'