I think most places it's next weekend, no?!? In any case, sounds like it was more fun than Huddart.
Halloween did not have much to do with this event, except for the English descriptions, (i. e. a pit was described as an open grave)
What else? Lone tree --> gallows? Boulder field --> slow moving zombies? Massive gully --> Bay Area shallow reentrant?
You have gotten the gist of it. Actually not many were very creative.