DELTONA, Fla. -- It could take thousands of dump trucks full of dirt to fill a huge sinkhole in Deltona. The 225-foot hole has already swallowed Howland Boulevard, power poles and part of a swimming pool. Now, homes are in danger, too.

Crews have been drilling around the perimeter of the sinkhole all Monday morning. They're trying to determine not only the stability of the area, but also the size of the hole underneath the surface.

"We have permission from neighbors to go on their property and begin to drill holes," says Volusia County spokesperson Dave Byron.

The Timber Crest subdivision in Deltona may never be the same.

"We have reason to believe, as we've said all along, the hole is going to get bigger. How big? When? We don't know," says Byron.

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Saturday, a huge portion of Howland Boulevard sank at least 50-feet deep into the earth, forcing dozens of neighbors to evacuate their homes. All were allowed to return to their homes except Emmett McGee and his next-door neighbor since they are so close to the hole.

"It's like a nightmare, man. Four hurricanes and a sink hole," says McGee.

All they can do is wait and see how county engineers plan to repair the road. That is, if it can be fixed. There's a strong possibility the county may have to build a bridge over it.

"We're looking at the possibility of some temporary roads that we may have to build," says Byron.

There's no question something will have to be done soon. About 25,000 commuters depend on Howland Boulevard to get into and out of Deltona each and every day. Other than drilling holes around the perimeter, there's nothing else engineers can do right now. They need to wait a few days, possibly more than a week, for the ground to stabilize.