Sky Sanctuary Zone

Sky Sanctuary Zone is the penultimate stage (excluding Doomsday) of Sonic & Knuckles. It is a large temple in the clouds, just above Angel Island. This is where Knuckles takes Sonic in order for him to reach the Death Egg. The former stays behind and proceeds to battle Mecha Sonic for the Master Emerald.

Overview
Sky Sanctuary Zone was created for MUGEN by Dj Sonic. Sonic and Tails both appear on their biplane, the Tornado, and Knuckles is seen with a Chao as well. Angel Island can be seen in the background, tipping back and forth as it did in Mecha Sonic's battle in the Sky Sanctuary.