Sonic the Hedgehog 3/Marble Garden Zone
The marble ruins of an ancient civilization. The mini-boss uses a pair of drills to attack Sonic and Tails, both directly and by drilling into the rock above and raining debris on their heads (reminiscent of Dr. Robotnik's own vehicle in the Mystic Cave Zone of Sonic 2). Dr. Robotnik attempts to crush the pair under the collapsing ruins, and when Tails airlifts Sonic out of danger, charges at them directly with his drill. This is the only zone without any water to drown Sonic or Tails, though tar pits can still drag the heroes down and kill them.