Here's another article about the designation of Mount Aso as a Global Geopark. …

Here’s another article about the designation of Mount Aso as a Global Geopark. The article says that “Observation decks have been set up around the crater so visitors can get close up to the volcanic activity.” It neglects to mention, however, that currently one cannot get within one kilometer of the volcano because it is unusually active:

http://www.aso.ne.jp/~volcano/i/info.html

http://ajw.asahi.com/article/behind_news/social_affairs/AJ201409240054