With iron this then falls off allowing the layer of iron underneath to undergo the same process, fall off and before you know it your Alfa Romeo sports car is in little pieces on the driveway.
At one point I stopped for a swig of water, and when I slapped at the whining mosquitoes that danced on my neck and hands, I slipped and slid over some tumbled pieces of rock, grabbed at branches to stop my fall, and landed just in front of a bas-relief of warriors, maidens and fish alive in stone.