It is believed that this cave existed for 300 million years. Cave is approximately 5.5 miles (9 kilometers) long however only 0.6 mile (1 kilometer) is available for exploring.

Name: Akiyoshido Cave

Lat, Long: 34.2337523,131.2998156

Location: Mine, Japan

Akiyoshido Cave, Mine, Japan

https://i0.wp.com/www.weirdgoogleearth.com/wp-content/uploads/2020/05/akiyoshido-cave.jpg?fit=1024%2C576&ssl=1https://i0.wp.com/www.weirdgoogleearth.com/wp-content/uploads/2020/05/akiyoshido-cave.jpg?resize=150%2C150&ssl=1WeirdoCavesNatural formationsWeird StuffCaves,Natural formations,NatureIt is believed that this cave existed for 300 million years. Cave is approximately 5.5 miles (9 kilometers) long however only 0.6 mile (1 kilometer) is available for exploring. Name: Akiyoshido Cave Lat, Long: 34.2337523,131.2998156 Location: Mine, JapanPeculiar places from around Google Earth