The adventure!

One day, Jon was walking home from school and he saw a map right outside his house. He took it inside and sat down in his room. He looked inside and he was amazed. It was a map leading to treasure. X marks the spot! It was in a cave, a deep, dark cave, he left his house and took a torch with him. He entered the cave and he was looking around at all the dead flies in the webs. He wasn't looking and he suddenly stepped on the X..... A big boulder fell down behind him. Did he escape or not?