Build a cube around the rock and instruct people to circle it during pilgrimage to the holy rock, which takes place once a year. Your descendants may fall out over which follows the real instructions and may start their own sects, each with slightly different rules.

Coming to think if it, it would be the ultimate troll if you can pull it off. Imagine a prank that goes on for centuries and gaining so much momentum that people start killing each other over it.