My 2 1/2 yo sulcata has started digging in a corner of his outdoor enclosure! Every few days I fill the hole back up. Hadn't had a chance to fill the hole for several days until this afternoon. I used a broom stick to measure the length of the burrow and it was about the same as the broom handle. I'm concerned that he will dig to far that I can't get to him or that it will collapse. He has a heated night box but has slept in his burrow the last two nights. Should I quit filling the hole and just keep an eye on the depth? If so, should I let him sleep in it or try to get him out every night and close him up in his box? Living in Texas and it is starting to get real hot and there is not a deep shaded spot in his enclosure yet! Constantly working to improve his enclosure and deep shade is in the near future plan!