Except to my knowledge it's fake, at best fish traps.

Which is why I knew there was no evidence, when this came out, and seemed obviously not true I was surprised at the time everyone as saying this was the 'first' evidence of farming.

"In the first evidence of a sedentary Aboriginal community, Builth found what she argues is an ancient eel farm in the form of countless channels crisscrossing the landscape at Lake Condah."

Makes for a good thesis but she(one person in the whole community) is still arguing the point.