The dust is from the calima/kalima, a desert wind -from the African continent obviously- that makes life outside rather difficult, especially when running after a hat around midday.
![](https://chienandalou.s3.eu-central-1.amazonaws.com/20080430113032_la-pared-2.jpg)
The dust is from the calima/kalima, a desert wind -from the African continent obviously- that makes life outside rather difficult, especially when running after a hat around midday.