Here are my favorite places to visit in Japan
| Prefecture | Population | Capital |
|---|---|---|
| Okinawa | 1.3 million | Naha |
| Miyagi | 2.306 million | Sendai |
"Rising over 1,800 meters above the border between the Yamagata and Miyagi prefecture, Mt. Zao is not only one of the region's most revered and sacred power spots, but also a popular destination year around for outdoor activities and ancient onsen baths." - TheHiddenJapan.com
"Also known as the "Five Color Pond" (五色沼, goshiki numa) because it changes color depending on the weather, it lies in a crater formed by a volcanic eruption in the 1720s" - Wikipedia
"The Zaō Mountains, commonly called Mount Zaō, are a complex cluster of stratovolcanoes on the border between Yamagata Prefecture and Miyagi Prefecture in Japan. The central volcano of the group includes several lava domes and a tuff cone, Goshiki-dake, which contains a crater lake named 'Okama' " - Wikipedia
Check out Prof's personal page