We went to Big Pit National Coal Museum last weekend, it was so good! And we went down the coal mine that was still in use not so long ago, here’s a picture before they took away our phones:

 

Because you can’t bring anything with a battery down the mine, health and safety is not kind on Polar Bear! So he later performed a random gravity check 300 feet below ground… in protest. 😛

[Sketch of this comic] (Patron link)