A raised ring around a deep hole with lava at the bottom. Don't worry, the lava's shallow... and if you fall in (or jump in), you'll end up on top of the central flagpole. Only one way down from there...

Sorry, no description given at this time.

Bigger than it looks at first glance. Very dark (until you find the lights), and very light on ammo (until you find the secret areas).

Platforms acting as walls constantly change the shape of the playing field, providing differing paths for getting to your objective. Not much to look at, but can be fun to play.