Bogg 4
this was the fourth moon of the planet Bogden. It was covered with rocky terrain, but had an atmosphere which could accommodate many humanoid species. Bogg 4 was large enough to suffer the same seismic disturbances encountered on Bogden itself, only the effects were much more pronounced on Bogg 4. Buildings and structures had to be built to accommodate the shifting landscape during periods of gravitational "tides", and the beings who lived on the moon were forced to adapt their walking style to match the moving surface.