The first photos from flood-ravaged Camp Mystic, the Christian Texas summer camp from which 27 young girls are missing, tell a heartbreaking story. The images capture both the destruction of the floodwaters—toppled trees and shredded buildings—but also the human traces left behind by the campers.

As first responders continue to rescue people stranded by the torrential flooding that descended on central Texas Friday, dozens of people are facing a parent’s worst nightmare: Their children are missing.