Onogame Rock (Sado)
Open by month
Open in January. No seasonal closure recorded.
Open in February. No seasonal closure recorded.
Open in March. No seasonal closure recorded.
Open in April. No seasonal closure recorded.
Open in May — at its best. Sado Kanzo Week while the day lilies bloom (late May to early June).
Open in June — at its best. Sado Kanzo Week while the day lilies bloom (late May to early June).
Open in July. No seasonal closure recorded.
Open in August. No seasonal closure recorded.
Open in September. No seasonal closure recorded.
Open in October. No seasonal closure recorded.
Open in November. No seasonal closure recorded.
Open in December. No seasonal closure recorded.
Checked against the official site on 2026-10-15.

A single 167 m monolith jutting into the sea on the Sotokaifu coast in northern Sado. Around it grow some one million Tobishima day lilies, which turn the slopes yellow in early summer.
Nearby
- Senkaku Bay (Sado) ≈ 1 h 10 min by car
- Toki Forest Park (Sado) ≈ 1 h 15 min by car
- Sado Gold Mine ≈ 1 h 20 min by car
- Kitazawa Flotation Plant Ruins ≈ 1 h 20 min by car
- Sado Magistrate's Office (Sado Bugyosho) ≈ 1 h 20 min by car
Travel times are rough estimates by car.
- Best time
- May, June — Sado Kanzo Week while the day lilies bloom (late May to early June)
- Getting there
- About 55 min by car from Ryotsu Port; 1 min walk from the Onogame stop of the Uchikaifu Line bus (few buses a day)
Few buses — check times or join a tour - Good to know
- Uchikaifu Line buses on weekends and holidays must be booked by 17:00 the day before
- Time needed
- 1 h
Checked against the official Japanese website on 2026-10-15. Report outdated info