We have had our rabbits in cages and were just using ice jugs to help them through the triple digit summers. But this year we lost our favorite buck anyway. So we are working on a new project and I am hoping for input from someone who has maybe tried this or something similar. We are stacking all cages in a row elevated off ground by cinder blocks. A large piece of pvc pipe provides a tunnel out the back of each cage into an old plastic ice chest which acts as a burrow. Each rabbit has their own "tunnel and burrow". Ice chests will be burried in large dirt pile but with lids exposed so we can check on rabbits or clean out as needed. Leaving lids exposed will not provide as much temperature moderation as complete burial but we figure we would rather drop ice jugs in during summer as needed than to not be able to check on them at all. And the ice inside an ice chest partially burried will most certainly be more effective than just an ice jug in an open cage was for our poor buck. I have seen lots of stuff about underground burrows but nothing quite like this set up so curious if anyone tried it and had input. Thanks!