Razianeh is a narrow and unfathomable canyon which is located in a green area in Ilam- Dare Shahr Road. 75 hectares of the lands of Razianeh canyon was introduced as a national-natural relic in 2009, and in the same year, this relic was registered in the list of Iran’s national-natural relics. The canyon has a length about 2 kilometers and in some parts it gets to 1 meter in width