Texas parents are frantically posting photos of their daughters and pleas for information as at least 23 campers from an all-girls summer camp remain missing after floods tore through the state’s south-central region.

Camp Mystic, on the banks of the Guadalupe River near Hunt, Texas, has been operated by generations of the same family since the 1930s.

Teams conducted dozens of rescues, and the emergency response continued as an unknown number of people remained unaccounted for.