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

Texas parents are frantically posting photos of their daughters and pleas for information as more than 20 campers from an all-girls summer camp remain missing after floods tore through the state’s south-central region.

Lt. Gov. Dan Patrick said Friday during a press conference that about 23 girls were still missing after major flooding at a private Christian summer camp in Hunt.