Divers deployed by Dr. Siebert identified strange chimney-shaped vents on the lake ... areas at risk of collapse in the near future. Sinkholes, which are subsidence craters up to 100 meters ...

Chimney Hollow Reservoir, Colorado's fourth-largest dam, will begin filling in early July and reach half capacity by late 2025 or early 2026. The 350-foot-tall dam is expected to be completed by ...

DALLAS — A truck with a trailer got stuck in a sinkhole in Dallas on Monday morning after a wastewater pipeline broke, officials said. The incident happened around 9:30 a.m. in the 1800 block of ...