Nikko is in the mountains north of Tokyo, whereas the Izu Peninsula is westward. There the Pacific plate descends under the Asian plate, with earthquakes. Volatile materials rise from the former seafloor causing concentrated volcanic activity.
This shrine was built by the shogun Tokugawa Iemitsu to commemorate his grandfather, Ieyasu.
Unfortunately a storm was moving through, and it snowed 15 cm the previous night.
Hakone, at the east end of Lake Ashi, is the town where we stayed.
This is a cable car. The previous day's storm was still around. Without it we would have had a spectacular view of Mt. Fuji.
The shogun required that the wives of the daimyo (feudal lords) stay in the capital and participate at court even when the lord was in his home territory. Can you say hostage
? Also armed men travelling to the capital were dangerous. A number of checkpoints enforced these rules.