木漏れ日山 <--- [Ko][More][Bi][San]

Really interesting! Here is more information from ウィキペディア (Japanese Wikipedia):

There are trees and it is a sight that you can always see when the sun is shining, but you can see it well if you go directly under the sunlight through the trees. When it clears up immediately after rain, it reflects off water vapor and can be seen well even if it is a little far away, and it looks like a curtain.

The sunbeams projected onto the ground all have the same round shape as the sun. It is not affected by the shape of the gaps between the leaves where the sunlight enters. This is the same principle as a pinhole camera.
On the other hand, when the shape of the sun changes, for example, during a partial solar eclipse, a rare phenomenon occurs in which each sunbeam is projected into a missing circle or crescent shape.
https://live.staticflickr.com/65535/50515852847_246ac559fb_c.jpg

And I just read this:
It also means Melancholic longing or nostalgia for a person, place or thing that is far away from you.

"@Rouensims;c-17698112" wrote:
Really interesting! Here is more information from ウィキペディア (Japanese Wikipedia):
It also means Melancholic longing or nostalgia for a person, place or thing that is far away from you.

https://upload.wikimedia.org/wikipedia/commons/thumb/1/18/La_Rebeyrolle%2C_%28Creuse%2C_Fr%29%2C_sur_le_chemin_de_St.jacques.JPG/1200px-La_Rebeyrolle%2C_%28Creuse%2C_Fr%29%2C_sur_le_chemin_de_St.jacques.JPG
Here is more artistic version suitable for the Melancholic and Nostalgic mood.