Hi y’all, I’m in the process of building my Russian tortoise an outdoor enclosure and I went with this as one of my hides (the other is a large terracotta pot we’re going to partially bury). My question is: do I need to insulate the inside of this? I live is the USA in zone 5b, if that helps at all. Plus, my tortoise will come inside this year when it gets too chilly out, so she won’t really be outside when it’s cold at all. If it does need to be insulated, what do you recommend?