Fushigoe-no-hana, Toyo, Aki, Kochi, Japan

It is hard to walk across this beach for pilgrims of Shikoku because there is a stretch of large boulders on gravel, and what's more, the rough waves prevent them from crossing the beach.  This dark gray sand is coarse/very coarse-sized, moderately sorted.  The grains are 0.5-2.0mm in diameter.  It consists of sandstone, shale, chert and quartz with smaller amounts of seashells.