This is an underground tunnel used by local residents to walk through the Manda Pit. The entrance of the tunnel is located in Arao City, Kumamoto Prefecture and the exit is located in Omuta City, Fukuoka Prefecture. The tunnel was built in 1933 and the wall was made partly from cut stones and partly from brick. The entrance is 2.7m wide and 2.4m tall. The ceiling was covered with concrete. The tunnel is approximately 130m long with some skylight sashes. Many residents used the tunnel because there were many large stores and the Kurakake Shopping Town on the Arao City side and a theater house called Kyorakuza on the Omuta City side. Currently, the both ends are closed for safety.