Advertisement My DH has been tunneling in his new enclosure, which i know is normal. My question is this, he has tunneled through about 5" of a sand/excavator clay mix and has gone all the way to the bottom of the tank. He has back-filled the entire tunnel structure that he has made with the loose sand mixture and now has basically made no outlet to come to the surface. He has been like this for a little over a week. Is this normal behavior or do I help dig the little guy out? Do I just let him figure it out on his own or is he possibly looking to molt? Thanks in advance!