Take the East entrance of Ifrit's Cauldron. Make a right at the first junction, head past the first Flame Spout, straight through the cave and follow the path around the crater to the drop point at I-7/8. Enter the cave immediately to your left. Sneak and Invis will be needed the entire time.
Follow the path until you reach a large room with Bombs, Bats, and Ash Lizards (H-7).
2 ???s will be in this room. The ??? in the middle of the lava bridge will be the one that triggers the NM Skeleton Cailleach Bheur.
The best place to camp is at the far tunnel, past the 2 ???s. Clear the 2 bats and the bomb if necessary, then pull to the tunnel. You have 16 minutes before enemies start respawning.
Doctor Shantotto has recruited you into her staff-wielding team for the coming contest. Practice your skills with the staff you have been given until you've reduced it to splinters. What lies ahead? Glory and honor? Or blood and broken bones...?