Lit. cave alcove. A cave-like entrance to a tea ceremony room, partially enclosed by a side wall. The side wall is called *sodekabe 袖壁. Usually this type of alcove is about 120 cm wide with an opening of 97-100 cm. It does not have an alcove post *tokobashira 床柱, or finishing board, ochikake 落掛, along the top of the valance wall. In these two points, especially, it differs from *murodoko 室床. The front opening of the horadoko is arch-shaped, and it is plastered inside and out. The corner posts are also plastered. Exposed edges are sometimes plastered to form rounded corners hamaguriba 蛤端. A window with a hanging translucent screen kakeshōjimado 掛障子窓 is on occasion made in the sidewall to provide light for the darkest part of the cave alcove. The floor may be of two types: a plank floor which is level with the *tatami 畳 of the tea room *chashitsu 茶室, making a step-in alcove *fumikomidoko 踏込床, or the alcove is raised a step by placing a facing board kamachidoko 框床, across the front. A peg is inserted in the center of the rear wall for hanging a scroll. Sometimes a peg for a flower vase is placed in the center of the alcove opening. Examples: Taimadera Naka-no-bō 当麻寺中之坊 in Nara; Ninnaji Hitōtei 仁和寺飛涛亭 in Kyoto; and Kanden'an 菅田庵 in Shimane Prefecture.