Killer Rock

Every Year i go to the Thousand Islands. Specifically deer Island, on the Island there is a rock called killer rock. The rock is called that because it is in the middle of a trail. it has a sharp tip sticking out from the ground. So one day i was running through the trail when i tripped on a root and my knee fell right on the spike. My knee immediately starting bleeding and i started to cry. but that was a few years ago, and there is a scar there now.