Search teams have located the three teenagers who were reported missing on Sunday night in southern Wisconsin.
Dodge County Sheriff Dale Schmidt confirmed the three boys, who went missing in a densely wooded area home to a number of abandoned mine tunnels, had been found.
A sheriff's office spokesperson told BringMeTheNews the trio, identified as 16-year-olds Tate Rose and Zachary Heron, and 15-year-old Samuel Lein, are safe.
The boys were reported missing late Sunday, the Dodge County Sheriff's Office said. Officials were searching in the Iron Ridges Mine area near Hubbard in Dodge County.
Police said the area is "heavily wooded" and features a number of old mine tunnels, which made the search area "difficult to traverse."
A specialist with the state Department of Natural Resources, who was leading rescuers around the caves, discovered a footprint early Monday afternoon and heard the boys yelling for help, ABC News reports.
They weren't injured, reports note.
According to MinDat.org, the Iron Ridge Mines are in the Neda Iron District, which was active between the 1850s to 1915 when four iron mines and a limestone quarry operated in the area, producing millions of tons of iron ore.