Genbikei (厳美渓) is a two kilometer long ravine on the Iwai River in the city of Ichinoseki, Iwate Prefecture, Japan.

[1] Genbeikei is in the Kurikoma Mountains in southwestern Iwate, and has been popular as a scenic spot since at least the early Edo period.

In August 1877, Emperor Meiji visited the ravine on his travels through the Tōhoku region, and subsequently Kōda Rohan wrote a travelogue which drew many visitors to the area.

Geologically, the ravine was formed by erosion of a thick seam of dacite tuff deposited by eruptions of Mount Kurikoma.

The erosion has produced strange rock shapes, waterfalls, rapids and the formation of potholes on the river bottom.