土俵 — the sumo ring is sacred earth
土俵 (どひょう) literally means "earth bale" — built from clay and sand. It is sacred Shinto ground: wrestlers throw purification salt before each match. The 土 of the ring isn't just dirt — it's a living Shinto space.
どひょう · sumo ring
すもう · sumo
しおをまく · salt purification