a Skeleton Key. Get on top of the Maker Custodian once again and this time ride to the northwest part of the room. Move the custodian so that it is right in the middle of the spiked machine found here. Jump off the custodian and pull the nearby lever, causing the spikes to smash the custodian into pieces, leaving only the orb. The cauldron will carry the orb, but will drop it at the southwest part of the room. Grab the blue orb and ride it to the south end of the room. Use the Skeleton Key to unlock the door and then roll the blue orb to the next room. Place it in the hole near the south end of the room to lower the nearby gates. There is an Earth Crag in this room, but Karn should make quick work of it. At the south end of the room use a few wall jumps to jump from wall to a wall to climb your way up to a hand hold. Drop down at this higher platform and then run on over to the second Heart Stone. Knock it down and Karn will come and pick it up. With the Heart Stone in hand, return through the passage to the north. Along your way you will encounter some Nightmare Prowlers. These creatures are even more powerful than the savage prowlers we previously fought. Continue down this pathway to get back to the room with the bridges. Jump into the