Fossa Magna is a great rift lowland in Japan.
Fossa Magna is Latin for "great crevasse".
It is part of Itoigawa UNESCO Global Geopark.
[5] Itoigawa is located directly above Itoigawa-Shizuoka Tectonic Line and is a place where you can observe a wide variety of rocks, minerals, geological structures and so on.
The Fossa Magna Park, a geopark, is also located in Itoigawa.