FUN FACTS: Fukiware Waterfall is considered “The NIAGARA FALLS of Japan” Located in Numata area of Gunma , it is considered to be one of the best 100 waterfalls in Japan. It is called Fukiware because the giant rock at the mouth of the waterfall is split (fukiware). It is about 7m (21ft.) high and 30m (90ft.) wide and has a shape of “V” making this waterfall resemble Niagara Falls.