https://www.alltrails.com/explore/trail/japan/okinawa/ta-taki-river-trek-henan-river-ta-taki-waterfallHenan River “Ta-taki Waterfall Trek is a 2.4 kilometer heavily trafficked out and back trail located near Ogimi Son, Okinawa, Japan that features a waterfall and is rated as moderate. The trail is primarily used for hiking and nature trips and is best used from April until October.