Rocks are referenced several times in the Bible with different meanings. The Lord is known as the Rock of our salvation (Psalm 62). Jesus was the cornerstone that was rejected, but became the cornerstone (1 Peter 2). Jesus says that if people didn't praise him, even the rocks would cry out (Luke 19). David slayed Goliath with a smooth stone (1 Samuel 17), Moses struck a rock and water came forth (Numbers 20), and God told Joshua to set up 12 stones as a memorial to the Ark of the Covenant crossing the Jordan on dry land (Joshua 4). Most importantly, the stone was rolled away on Easter morning (Luke 24).
Here is a cache that replaces the older "Westside's London Bridge". Parking is within a few feet. You do not need to climb the wall or get on top of the wall. You might need gloves or a tool to reach the container; several tools can be found at your feet. I have received permission from one of the pastors at the church to hide a cache on the property and they know where it is. The coordinates are good so tread lightly!