Meanwhile, internal paths are more linear, and even though there are some enclosed passages, rooms inside tend to be fairly large and spacious as well. Though there are plenty of lava pits to dodge here too, the difference is that you spend most of your time outside, where the ground tends to get fairly hilly, with occasional slopes and curves.
Hill Top's structural principles are vaguely reminiscent of the Marble Zone, in that it has a mixture of open spaces outside at the top of the stage, and more cramped internal caves below.
