So the realistic problem is to figure out where all these old mines go, and then fill and cap them and then rebuild the road on top." After the February sinkhole collapse and investigation ...

It’s been nearly one year since Jason Nielsen first noticed a small sinkhole in a canyon next ... about 15 feet across, on top of a mountain biking and walking trail that he says people use ...

Portions of Interstate 80 in Morris County have been closed for four months due to sinkholes ... material — there’s sand at the top — and down below, there’s an opening.” ...

Thought to be directly under the Avalon Wharton housing complex and Interstate 80 near the sinkholes ... with workings still evident on Sparta Mountain. Those were tapped by Thomas Edison ...

An Ivy League-educated geologist said Thursday that one possible culprit behind the sinkhole problem in North ... material — there’s sand at the top — and down below, there’s an opening.” ...