It is the center of gravity. The center of gravity of the lord and the apex of the cobblestone are not on the same vertical line, so it has an imbalance and slips off the cobblestone.
Is the center of gravity, the center of gravity of the main buddha and the verte of the cobblestone is not on the same vertical line, so there is an imbalance, sliding from the cobblestone.
It's the center of gravity. The center of gravity of the Lord Buddha is not on the same vertical line as the top of the pebble, so the imbalance occurs and falls off the pebble