Aoshima Island south of Miyazaki city in the prefecture of the same name is one of Japans most spectacular geologic formations. The heavily forested island is home to a Shinto shrine and a walking path that circles the island. When I was studying Japanese at the University of Arizona I had a picture of this island in my folder. I looked at it when I needed inspiration to study Japanese. My idea was to go down to Miyazaki when I was going to school at Konan University in Kobe, but I never got around to that until last August. I'm glad I went, but I was covered by sweat before I got halfway around the island. Miyazaki is a very tropical place.
The rock formation that rings the island is called the "Ogre's Washboard." You can see the rocks from above on Google Maps. With all those parallel lines it almost looks like it's man made.
The shrine on the island has this unique tradition where people tie 50yen coins with pieces of colorful string to a pole. I'm sure its for some type of luck. I couldn't read the Japanese sign that explained it all.