Specifically - mountains.

CC3 has some really tall mountain icons and I was wondering if there is some kind of proportional concept that makes things look unbelievable. I'm sure someone has asked this before but there are some things I've seen in the world that looked unbelievable but were actually real. (I once saw a tree that I just went - no way. It had branches that made the tree almost 100ft in diameter [area under the branches].) It was up north. I think I was in North Carolina at the time. If I were to put such a thing on a map - I'm sure at least one person would go "That's not realistic".

So when do you think things get too weird to be realistic?