I can only find aluminium on the sides of mountains. I have tried 2 different settings for the Be Happy map. The first one is normal terrain with no caves, the second one is flat terrain with caves. On the first setting I can find aluminium on the sides of mountains but not underground and on the second setting I didn't find any aluminium. I have found gold on both map settings. It was frustrating when I found gold on the second setting but no aluminium.
Is the above normal for all maps?