The Kiyotsu Gorge has been appreciated as a site of natural beauty for many decades, but its popularity is only a recent development, thanks to an art installation that turned its panorama into a fantastical vista into another world. The pedestrian tunnel was constructed in 1996 to respond to the demand of locals and tourists who wished to see the Gorge better, as the hiking route had been closed off due to a lethal rockfall accident in 1988. The tunnel stretches on for about half a mile, with three observation points…
