At some places the day temperatures are very high and the night temperatures are very low. In the given pictures the rocks may have broken due to temperature variation during day time and night time. In coastal areas when the sea waves hit the rocks, the rocks fracture and break down. Due to the roots of trees, and activities of burrowing animals like ant, rats etc. in the soft rocks, the rocks break down. The statues might be deformed due to heat and humidity.