Also There could be more than one boulder becase an interplanitary orbit would be hard to make work everytime. The white orb could be moons with there own boulder and artifact pointing to it (ex multiple places of it being seen, and multiple monuments on moons near planest where it has been seen.). the blueish circle could be minmus perhaps lathye? The four men equaling four missions needing to go two four moons from kerbol hence the arrow. Also the asemt vectors tell you how to get to the first majic rock and the weird five point monument on that one moon telling you how to get to another magic rock. just a theroy what do you think? P.S sorry for the doble post but this has more of my idea.