Continental Resources Inc. submitted a private initiative on May 13 to Río Negro province’s Secretariat of Energy and Environment to gain access to La Huella, a 506-sq-km block on the eastern edge of Argentina’s Vaca Muerta shale formation. Río Negro Gov. Alberto Weretilneck confirmed the filing days later during a public event. “Continental submitted a private initiative for Lago Pellegrini, called La Huella, which is the easternmost Vaca Muerta area so far,” he said.