Traffic around Morris County is slowed down after another sinkhole developed on Interstate 80 in Wharton on Wednesday.
Four miles away in Mine Hill, the mayor and residents say they know the damage these sinkholes can do. The town has had 10 significant sinkholes over the last 14 years.
Fast forward to the sinkhole on I-80 East in December, the state Department of Transportation says an abandoned mine collapse was the cause. A state Department of Environmental Protection map shows hundreds of abandoned mines in North Jersey.
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"Mines are something that we just live with because they were here 350 years before," says Mine Hill Mayor Sam Morris. "They would go in and chip it out and put it in bags or a cart and bring it back. They would go just as far as the iron ore ran underground and then they would stop."
It's unclear how long repairs are going to take.
