I'm going out to Joshua Tree Thursday for soem rock climbing. I was excited hoping I could see a DT, but DUUUUUUUUHHHHHH, they'll be hibernating! Do they leave an open hole behind them when they burrow to hibernate? I don't want my friends or myself accidentally caving one in or doing anything to disturb them. Also, if I saw one, could I offer him/her some water in a clean lid? I know I can't touch them, but just curious. Thanks!