I did not know such things even existed but sandfalls are actually real.
It seems that this is a relatively new phenomena and is caused by flooding or strong winds which causes sand to behave like a liquid, below is footage of this rare phenomena.
|Source|Footage captured in March 2017.
Below is another clip that seems to be the result of strong winds but still quite the spectacle.
|Source|
Fun Fact
Saudi Arabia has no permanent lakes or rivers but instead there are "Wadis" which are river beds that are completely dry or begin to flow after heavy rains.
Thanks for reading and if you found this interesting consider upvoting, following and resteeming.
P.S. If you are interested in buying or selling Steem consider using my link and sign up to Binance.
Previous Blog|Next Blog