Hours before a massive wall of floodwater barreled down a river in the heart of Texas Hill Country before sunrise on Friday, forecasters with the National Weather Service warned people that dangerous conditions were brewing.

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.