Complex sentence: An upside-down stair-like cliff 25 feet high is climbed to jump across 7 feet to the other side where a sword is drawn out to signify the completion in 2007 part of the obstacle was put in the 3rd stage of Sasuke.
Split into simpler sentences: An upside-down stair-like cliff 25 feet high is climbed to jump across 7 feet to the other side where a sword is drawn out to signify the completion of the obstacle. In 2007, part of the obstacle was put in the 3rd stage of Sasuke.