CRANE, Texas (AP) — Rusted pipes litter the sandy fields of Ashley Williams Watt’s cattle ranch in windswept West Texas. The corroded skeletons are all that remain of hundreds of abandoned oil wells that were drilled long before her family owned the land. The wells, unable to produce any useful amounts of oil or gas, were plugged with cement decades ago and forgotten.

But something eerie is going on beneath the land, where Watt once played among the mesquite trees, jackrabbits and javelina and first drove the dirt roads at 10 years old. One by one, the wells seem to be unplugging themselves. They’re leaking dangerous chemicals that are seeping into groundwater beneath her ranch.