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Push the pillar all the way down the thin path until it stops. This will now complete a nearby set of stairs. Grab Hera's corpse and deposit it somewhere near the base of these stairs.
Run over to the disc on the ground and step on it to switch to the "green view" of the area. Make your way over to the staircase you just assembled and grab Hera. Use the stairs to dump Hera's body into the third bowl, thus completing the path out of the maze.
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You'll need something to hold down the disc switch while you make your escape. Grab the pillar and move it to the disc to keep it depressed. Run up the long staircase in the lower left.
Follow the winding upper walkway out of the maze. A swarm of Harpies guards a large gap. Get the attention of one of them with an arrow and then use them to cross the gap. Press L1 + CIRCLE to grab a Harpy and then press X to dismount while keeping L1 pressed to switch Harpies.
You can save on the far side of the gap. Just up the stairs to the left is a shimmering cloud of gold dust. Shine the Head of Helios on this to reveal a special item chest with Red Orbs inside (this will contain a Gorgon Eye if you haven't maxed out your Health meter yet). On the other side of the stairs is a chest with Red Orbs by the save point. Turn the crank at the bottom of the area to open the large door.
In the hallway on the other side of the door you'll encounter lots of Scorpions. These easy enemies can be eliminated with Brutal Kills or just your regular attacks. As the tunnel darkens, be sure to have the Head of Helios handy. Use a charged blast of light to illuminate areas before you fight off the Scorpions.
When you come to a well-lit area with a large wheel, look to the left to find a chest with Red Orbs inside (this may be a Phoenix Feather if you haven't maxed out your magic yet). Crank the wheel to take the elevator down.
Follow the passage out to the massive Caverns where the heart of the Labyrinth lies.
