The “once-in-a-century” discovery of a set of solid gold bongs has offered a glimpse into the little-understood lives of Scythians, who ruled vast areas of Eurasia for a thousand years 2,400 years ago.

Ornately embellished with depictions of humans and animals, archaeologists found the golden vessels in a vast grave mound in the Caucasus Mountains of southern Russia, where the Scythians ruled between 9th century BC and 4th century AD.

They were discovered inside a chamber lined with stones and hidden with clay, alongside 7lbs of other gold items, including a finger ring, two neck rings, and a gold bracelet, MailOnline reported.

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Anton Gass, an archaeologist at the Prussian Cultural Heritage Foundation in Berlin, told National Geographic: “These are among the finest objects we know from the region.

"It's a once-in-a-century discovery," he said.

Analysis on a sticky black residue in the golden cups revealed the objects were used to hold a concoction of opium and cannabis, which mirror the writings of Greek historian Herodotus, who said: “Scythians used a plant to produce smoke that no Grecian vapour-bath can surpass which made them shout aloud.”

The bongs were discovered in 2013, as the burial ground, or kurgan, was cleared to make way for a power-line.