I am in Groddle Heights and I have been running in circles for the good half of a game day and I have yet to get the achievement. The only place I haven't been is "Heights Start", but I assume that's because it's the beginner area, hence why I cannot access it now.
Unless there is one spot I just keep accidentally avoiding without noticing, but I am working on these achievements and already have Ix, Groddle Forest and Ilmenskie Caverns.