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.

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.