This large rock located in front of the Kuro-mon gate is said to have been there since before the building of Chion-in Temple and that, in just one night, a vine grew out of it, flowered and bore gourds.
黒門への登り口の路上にあり、知恩院が建立される前からあるとされる大きな石で、一夜にしてこの石から蔓が延びて花が咲き、瓜が実ったと伝わる。