FILE - In this Oct. 29, 2009, file photo, traffic heads south on US 285 in Carlsbad, N.M. The New Mexico Transportation Department installed signs along the highway warning drivers of a potential sinkhole at a brine well operation along the roadway. Almost half of Carlsbad school bus routes travel over the well, on a busy road that borders a giant, underground cavern that resulted from years of manufacturing brine for the oil and gas industry. It's been nearly nine years since state officials first sounded the alarm about a potential collapse, but experts say could happen at any time. (AP Photo/Susan Montoya Bryan, File)
Featured Photo Galleries
