On October 23^rd, some visitors came to the Visitor Center and I was guiding them around the geopark. Apparently, they are touring all the geoparks in Japan. We were very lucky to encounter a rainbow while enjoying the fall foliage in Shintomi. Here are some photos.

Fall colors at "Shintomi Chert" geosite

The rainbow appeared right in front of Mt. Yoshida. (Photo taken in Sakae-machi)

We even saw a double rainbow. The second rainbow appears between Mt. Apoi and Mt. Yoshida. (Photo taken at Sakae-machi's former quarry, facing the Apoi mountain mass)

*The order of the colors differs from the primary and secondary rainbow. The primary rainbow has red on the outside and purple on the inside while the secondary rainbow show purple on the outside and red on the inside. In other words, the colors are flipped.

*The water droplets that make up the secondary rainbow are reflected one time more than the primary rainbow and the light is flipped towards the viewer, which makes it harder to see and the colors are not as vivid.

*The space of sky between the two rainbows, so on the underside of the primary one and above the secondary one, appears darker than the surroundings. This dark area is a phenomenon called "Alexander's Band." I hope to confirm this phenomenon next time.