From arrowheads and pottery to stone drills, Canada's CTV reports that about 30,000 artifacts have been discovered along the banks of the Detroit River.

The discovery is the result of an archaeological dig at the site where billionaire Matty Moroun's Detroit International Bridge Co. plans to have a replacement span for the Ambassador Bridge.

Turns out the soil on the banks of the river, adjacent to what has been one of the busiest border crossings in North America, is rich with history.

In a report that aired on CTV News Windsor on Thursday, an excavation overseen by the Walpole Island First Nation and AECOM Canada has been slow, but items have surfaced that range in age from a couple hundred years old to nearly 10,000 years old, according to carbon dating.

And at this point, the dig is only about a third of the way complete, the Canadian station reported.

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According to CBC News, the dig began in May 2018 and was a part of the Canadian government's conditions for a replacement span permit.

Walpole Island First Nation tribe owns the land and hired the archaeological firm AECOM. Canadian Transit Co. funded the project, which CBC reported May was expected to cost more than $1 million.

The archaeological mitigation area is at Villa Maria, Indian Road and a part of land between University Avenue and Riverside Drive in Windsor, CBC reported.

"We like to think this is the heart and soul of our traditional territory," Dean Jacobs, of the Walpole Island First Nation, told CTV News Windsor on Thursday. "This project does start connecting the dots from our First Nation at Walpole Island, the Windsor area, as part of our traditional territory."

CTV News Windsor reported that AECOM hopes to complete the archaeological dig at the site by the end of 2019.

However, not only are the Detroit River's banks prime for discoveries, but plenty of historical oddities lie within its waters as well.

War cannons, old wooden ships, cars, plus hundreds of firearms and even criminal evidence has been recovered from the Detroit River, the Free Press reported in February 2017.

A number of curious finds that have surfaced from the river, including:

A DeLorean in the 1980s

A bronze statue stolen from the Grosse Pointe War Memorial in 2009

A 6,000-pound anchor from a historic steamship pulled out in Nov. 2016 near the Ambassador Bridge

Six 1700s-era cannons recovered from the 1980s to 2011, one near Cobo Center was about 6-feet-long and 1,300 pounds

A M1 Carbine rifle from sometime between World War II to the 1960s, plus a propeller from a sunken Prohibition-era rum runner found near the bridge that have been mounted on a wall at the Detroit Police Underwater Recovery Team headquarters

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Alongside the Canadian's government permit condition requiring the Morouns to consider Canada's indigenous people, the Free Press reported in September 2017 that they must also improve local infrastructure in Windsor, create new public green spaces, protect the environment, and demolish the Ambassador Bridge once the replacement span is completed.

Contact Aleanna Siacon: ASiacon@freepress.com. Follow her on Twitter: @AleannaSiacon.