We have two six-year-old sulcatas. They have a summer burrow that is about 6 feet deep and about 11-12 feet long and turns at the end into a cavern they created. I have a heated insulated house for them in the winter above ground that works very well. However when I was at work the other day, the biggest one got out and broke the fence to get to the burrow. He went down there, and won't come out. I got up my courage, and shimmied down the burrow with a flashlight. I saw him at the very end. He looks very cold and isn't moving. I live in eastern Utah, and it's very cold at night. I have a heat lamp I have put down the burrow to try and warm him up and see if he will come out. He is much too heavy, and the burrow is too twisted for me to pull him out. I can barely fit with my arms ahead of me in the tunnel. And I have to have somebody pull me out by my feet. Does anybody have any ideas on what I can do to see if he is still alive other than using the heat lamp and trying to warm him up?