Not THIS cool! If you read my other thread, I said I was hesitant about feeding due to my new B. smithi sealing off her hid entrance. This morning, she had opened it up a bit so I offered a cricket. Cricket went in, didn't see it come out, and I couldn't see in with a flashlight. I decided to take the tank out of the plastic shoe-holder I keep it in, flip it around, and viola...
I thought she was getting ready to molt, but I guess she was just renovating! i haven't seen her in a few days so I was excited. The burrow is 8" long and over 3" below the top of the substrate, all the way down to the glass bottom. Thanks for looking!