This is a high muggle traffic area. Please be aware of your surroundings and who's watching.
When you approach GZ head for the "No Fishing" sign, but stay on the pavement. Have a seat on the wall and reach over and move the rock! You may have to use one of the many geocaching techiques such as, tying your shoe, dropping your cell phone or the team approach (one look out and one retriever). Good luck~