The young boy jumping looked about 15 years old.
He ran along the Castle wall and jumped straight out.
He has to get a good distance out to miss the rocks in the water below.
This distance puts him into the fast water channel so he has to swim back very fast before being swept away.
This jumping, called Tombstoning is totally illegal these young boys are always on the lookout for the Police.
Look at the next photo to see how far he jumped.