Section 3: Playing Area
- Dohyo (土俵): elevated clay-and-sand ring, raised ~50 cm above the floor
- Inner ring diameter: 4.55 m bounded by a circular rope (tawara) embedded in the clay
- Outer dohyo platform extends an additional ~2 m beyond the rope
- Two starting lines (shikiri-sen) drawn 70 cm apart at center
- Roof (yakata) suspended above the dohyo at major tournaments, modeled on Shinto shrine architecture
- Ring kept ritually clean — salt thrown by rikishi before each match for purification