This long and thin marshland of 3.3ha surrounded by a cedar forest, was designated as a National Nature Heritage site by the Japanese government in 1974.
The marshland is formed by abundant underground water coming from the Osuzu mountain and you can enjoy a wide range of plant life unique to marshlands.
Oaza Kawanami, Kawanami-cho, Koyu-gun, Miyazaki
April 16 - November 30 （April to September, 9 a.m. to 5 p.m. / October to November, 9 a.m. to 4 p.m.）
Closed on Mondays and August 13-15