Large disparities in temperature between the bottom of basins and higher atmosphere often result in fog. Mt. Aso is famous for this; the phenomenon is known as 雲海 (unkai, “sea of clouds”). A recent video taken of the Grand Canyon in the US showed the same phenomenon. So here you are: Dueling videos of 雲海. - William
Large disparities in temperature between the bottom of basins and higher atmosph…
