Sandy Spot

Sounds like an old pop stars name ; )
I was passing the Museum this afternoon and saw some children playing in the big sand pit there.   
Waited until they all left and just got a shot of the sandy soil which is very common here.  
As I was battling to come up with something for today I thought this was a perfect literal look for the Challenge of Earth.

Nullschool has a good view of Earth and is interesting to look at the wind all around the world
https://earth.nullschool.net/#current/wind/surface/level/orthographic=-251.10,-41.57,526/loc=102.609,10.374