Re: Leave it there
Assuming that the gold hasn't washed away, of course.
Tim Severtin recreated the Jason Voyage in 1984 and wrote a great book (1) on the subject. He had a master shipwright in eastern Greece build him a boat in the neotlithic style and he captained a crew that sailed the boat to then Soviet Georgia. And in the mouth of one of the rivers opening onto the Black Sea they came across locals who left sheepskins in the river to collect grains of gold as the river water washed through it.
(1) https://www.amazon.co.uk/Jason-Voyage-Quest-Golden-Fleece/dp/0099461803