A possible sinkhole formed Monday in Dodge County swallowing up a large pond and leaving the property owners in disbelief.

A massive hole is what remains now of Oliver Hodge’s 2.5 acre pond. Hodge, 68, and his wife Rozell were in bed when they heard a loud noise around 3 a.m. outside their home.

"It sounded like a freight train or thunder,” Hodge said. “It was a roar."

The couple said they thought it was a train rolling on the tracks close to their property. However, when they walked outside in the morning, they saw their pond completely drained and a large amount of the ground missing. They attribute it to a sinkhole which forms when underground water erodes bedrock which eventually makes the earth above it collapse.

"To wake up to this is scary, very scary,"Rozell said.

Scary because the couple's son and his family live in the house just feet away from where the ground sunk. No one was injured and the house is believed to be o.k. However, the situation is nerve wracking for the couple who've been living on the property for years.

"It keeps falling and even here, it’s got cracks where we’re standing, and I presume later on it'll fall in," Oliver Hodge said.

This isn't the first sinkhole on the property. The couple said one about the size of a trashcan formed on the side of the pond three months ago. When it formed, Hodge said he notified the sheriff’s office, the department of transportation and the environmental protection agency. When a worker with the EPA visited the property, Hodge says the employee measured the first sink hole to be more than 25 feet deep.

"EPA, they come down and look at it, (and) he said well I'm going to send an engineer down in a few days, well a few days turned into a lot of weeks. We haven't seen anybody yet," Hodge said.

Hodge said the problem eventually fixed itself but with an even bigger sinkhole now on the property, he and his wife said they have concerns when it comes to their safety now.

"I'm scared this water is getting into my well water and if it contaminates it, it contaminates my neighbor’s well water also," Hodge said.

For now, the Hodges said they're watching the pond fill up again from the creek that runs through their property, but they’re nervous that the sinkhole may grow larger.

"The house is up on higher ground but it is a possibility it could fall in.

Since seeing the sinkhole, the Hodges said it makes them question about whether or not to move. However, they said they plan on staying on the property at the moment.