Where Japan sent the people it couldn't kill
When medieval Japan needed an emperor to disappear, someone too sacred to execute and too dangerous to keep, it shipped him to Oki. Emperor Go-Toba died here composing poetry; Go-Daigo escaped in a fishing boat and took back his throne. Go-Toba's shrine is still kept on Nakanoshima, one short boat hop from the cliffs.
The scenery that met them is the Kuniga coast of Nishinoshima: seven kilometers of volcanic cliff-line, a UNESCO Global Geopark, culminating in Matengai, one of Japan's highest sea cliffs. A walking path runs 2.3 kilometers from the summit down to the shore, straight through pastures where cattle and horses graze right up to the unfenced edge. There is no guardrail above the 257-meter drop, and on most days no other walkers on the path.