Shifting Sands

In many levels, the Sand will begin to act strangely if you travel far enough east or west. The exact behavior varies by platform.

It's not uncommon to even fall through the sand, though Wayfarers will always be teleported back to the surface, so while this can be frightening, it's not dangerous.

PS4
In the PS4 version, it's common for the sand to rise up above your Wayfarer, or to sink under your Wayfarer's weight.

PC
In the PC version, the sand doesn't tend to move around, though it may do things like disappearing under your feet.