PHILADELPHIA (AP) — A Philadelphia man discovered a sinkhole in the street and saw something unexpected inside — a pool of greenish ooze.
Twenty-year-old Steven Reitz said Tuesday that the sinkhole opened in the Northern Liberties section of the city last week, and the ooze appeared several days later. When he and some friends spotted the green pool, they didn’t know what to make of it.
He posted a picture of the green-filled sinkhole on Reddit.com, drawing comments and curiosity.
But it turns out that the neon green liquid was nothing nefarious. Instead, Gary Burlingame, director of labs for the Philadelphia Water Department, says the green hue was the result of harmless dye that’s used to track flowing water and learn where sinkholes form.