[romx]

For some reason old Mexican stones refuse to be buried. Like the history of this one https://en.wikipedia.org/wiki/C%C5%8D%C4%81tl%C4%ABcue it has been buried several times but it gets back to surface.

[cratermoon]

The Brazil Nut effect? https://en.wikipedia.org/wiki/Granular_convection

[romx]

Coatlicue was a goddess, which was first kept apart from natives, during Spaniard colony. Soon natives found the place and brought offerings to the goddess. That made Spaniards to actually bury the stone. https://www.youtube.com/watch?v=DRlE85xYqzE