A dog fell into a sinkhole that opened up right under its tiny feet in Rockwell Park on Wednesday, according to a witness.

The park, which sits at the intersection of N. Cleveland, Edgewood and 1st Streets, is popular for dog walking in the Lyon Park neighborhood. Resident Elsie Frasier told ARLnow.com that two days ago she and her husband “heard someone screaming” at the park from their adjacent house. Someone walking their dog said it had fallen into the hole.

“We initially thought she was talking about the storm sewer openings, and only later, when we went out to the park, did we find out that a sinkhole had opened up right under her dog while they were out for a walk,” Frasier told ARLnow.com in an email. “The dog was on a leash so she was able to haul it out herself.”

The dog was unhurt from the fall, Frasier said.

The sinkhole is right next to the Washington Blvd bike trail, and was caused by a sewer line break, according to Dept. of Parks and Recreation spokeswoman Susan Kalish. County water and sewer crews cordoned off the area Wednesday night and have been pumping water away from the line since then.

Repairs to the line have been delayed due to weather, Kalish said, but the pumping has prevented the line from leaking into the surrounding area. As of Friday afternoon, Dept. of Environmental Services spokeswoman Jessica Baxter said crews are now working on repairs.

“We have crews there actively repairing it,” Baxter said. “The area is secure and the leak is not causing backups. We do not have an estimated time of repair just yet.”

Another winter with persistent sub-freezing temperatures has led to breaking water and sewer lines all over the county. Along with those line breaks have come rapidly forming sinkholes: a large hole created a substantial hazard on Williamsburg Blvd early last month and a sinkhole formed and caused water and mud to flood nearby properties in north Arlington ten days ago.