A nearly football-field-sized sinkhole prompted the Louisville Zoo to close on Wednesday.The hole was found in an undeveloped part of the zoo around 8:30 a.m. Wednesday. Officials said no people or animals were injured and there was no damage to any buildings.Investigators estimated the hole is approximately 50 yards wide, 85 yards long and 50 feet deep.Geo-technical and mining engineers said their preliminary findings showed the collapse was an isolated, singular incident in an unoccupied area of the zoo property and above an unoccupied area of the Louisville Mega Cavern.Officials said the cave-in was not caused by Tuesday's 3.4 magnitude earthquake in Tennessee.An in-depth evaluation will continue through the weekend both underground and above ground.Nearby homes and businesses have not been affected by the sinkhole.Neighbors who live above the caverns told WLKY they were concerned about the stability of their houses."I want answers," Donna Reddington said. "Over time, I want to be comfortable that my property value is going to stay where it is, and all is going to be well, and that we're not going to fall inside of some big hole."Crews are taking steps to divert water from flowing into the Mega Cavern, as rain is expected throughout the weekend.Both the zoo and Mega Cavern will be closed until the area is deemed safe.

A nearly football-field-sized sinkhole prompted the Louisville Zoo to close on Wednesday.

The hole was found in an undeveloped part of the zoo around 8:30 a.m. Wednesday. Officials said no people or animals were injured and there was no damage to any buildings.

Investigators estimated the hole is approximately 50 yards wide, 85 yards long and 50 feet deep.

Geo-technical and mining engineers said their preliminary findings showed the collapse was an isolated, singular incident in an unoccupied area of the zoo property and above an unoccupied area of the Louisville Mega Cavern.

Officials said the cave-in was not caused by Tuesday's 3.4 magnitude earthquake in Tennessee.

An in-depth evaluation will continue through the weekend both underground and above ground.

Nearby homes and businesses have not been affected by the sinkhole.

Neighbors who live above the caverns told WLKY they were concerned about the stability of their houses.



"I want answers," Donna Reddington said. "Over time, I want to be comfortable that my property value is going to stay where it is, and all is going to be well, and that we're not going to fall inside of some big hole."

Crews are taking steps to divert water from flowing into the Mega Cavern, as rain is expected throughout the weekend.

Both the zoo and Mega Cavern will be closed until the area is deemed safe.