One thousand meters deep - level 2
A man got trapped in a cave 1,000 meters deep in southern Germany. Rocks fell on him, and he was left there with injuries to his head and his chest.
He couldn't climb back to the surface by himself. It took his friend 12 hours to climb out and call for help. A specialist cave rescue team reached the man, but the way out was long and dangerous.
There are a lot of narrow tunnels and steep shafts. Rocks could fall at any time, and it was also dark inside. The cave was one of the deepest and most difficult ones in Europe.
Difficult words: injury (damage to part of your body), steep (going down rapidly), shaft(passage).