[SunkenCiv]

Ingots on the seabed off Antalya, from the oldest-known shipwreck in the world | Haaretz | Published on April 16, 2019 | Video credit: Tahsin Ceylan

A group of Turkish underwater researchers has found a 3,600-year-old Bronze Age shipwreck, which could be the world's oldest shipwreck, off the shores of southern Turkey's Antalya province. | 3,600-year-old shipwreck discovered in Turkey | VTV World | Published on Apr 10, 2019

[ETL]

[Fractal Trader]

There are those who claim that a significant amount of copper that made it to Europe during the Bronze age was from MIchigan. Characteristically the ingots were near 100 percent pure copper.

The Shipping of Michigan Copper across the Atlantic in the Bronze Age (Isle Royale and Keweenaw Peninsula, c. 2400BC-1200 BC)

[Robert DeLong]

Appears to be in rather shallow water too, form the short video I saw.

[trisham]

Amazing.

[M Kehoe]

Bttt.

5.56mm