Is this normal?

[Johnnyboy]

My beardie runs over to the cool end often, where i put a row of smooth rocks in a straight line, and it looks like he's trying to dig or move them aside like he's looking for something behind the rocks but there is only the glass of the tank once he moves the rocks. Am i supposed to provide a dig spot?? Why is he doing this?

 

[Lennifer]

Can u provide a pic of his set up/enclosure?

~Sandy