One time I was on my old horse Sydney, at my old barn we had a huge indoor arena (I'm guessing 200x80 might have been bigger I don't know) Any ways I was with my friend Jamie and she had two friends there. Well they had to horses out so I was only using half the arena and I was running my horse making him take sharp turns. We were practicing for barrels, Well the dirt was really loose in some places from a couple TBs early that day (they rip around there like crazy) well Sydney's foot sunk in one and we both flipped, I flew off and landed on my head (to this day I can not believe I didn't snap my neck) Sydney did a full flip and landed on his back. I was in shock, that was one of the most scariest thing ever to happen to me.
For like three months after that I was was so scared to run Sydney anywhere!