Kiyosumi Garden Tobi Ishi - Stepping stones are called tobi-ishi in Japanese, literally skipping stones or flying stones. Walking on a stepping stone pathway the visitor has to make tiny leaps to get from one stone to another. Stepping stone paths force visitor to go in line, one after the other. This is one reason why tea gardens often have stepping stones. While walking down the path to the tea house, the guests have time to properly arrive in the garden, leave their everyday lives behind and mentally and spiritually prepare for the eminent tea ceremony.