NOTES FROM THE ARTIST:

The crystals lighting up is a fairly new idea in this story (I came up with it a year ago to be precise). Actually, in the first version of this comic (which in hindsight was really just a draft) it was just plain gold they had to mine for, but due to my many rewrites the back story changed A LOT. Which means a lot of little details having to be changed or added in the drawn pages.