While from the mountains and rivers of the Paleozoic strata, beautiful garden stones and white sand were obtained, a natural environment like this could provide high quality gardening materials such as trees, stones, water, and sand, and the Heian-kyo was an ideal place for gardening because of its topography and available materials.
この古生層の山河からは、美しい庭石と白砂がとれたがこうした自然環境は樹木・石・水・砂など良質の作庭材料を供給し、地形からも材料からも、庭園をつくるのに好適の地であったといえる。