One of the major changes to the Fortnite Chapter 2 Season 4 map is that it now has a massive desert in the center. This is where Galactus attempted to devour the Zero Point. The entire area around it is covered in fine sand and pink crystals that introduces an interesting new gameplay element.
You can hide in the sand, and travel through it almost unseen by other players. It is not a foolproof way to hide, but it is a major help if another player has a bounty to kill you.
To hide in the sand, simply stand still in it. You will slowly sink until all that is left is a small mound of sand that other players will be able to see if they pay close enough attention.
To move, just use the same controls as you normally would. You will move at a much faster pace than walking, so while you lose a little time waiting to sink, you can make a quick getaway. To get out of the same, all you need to do is hit the jump button and you will pop up, surprising any enemies you manage to get the drop on.
You can still take damage to the head, and you can still take explosive damage, so don’t go thinking this will keep you safe from harm. It is a good way to hide through, as you can tuck yourself into a corner and be pretty much impossible to see.