The Mithra and the Crystal

Walkthrough

 * Head back to Western Altepa Desert at C/D-11/12 to enter Quicksand Caves.
 * Go to K-8, go through a weight sensor door, open another door at G-8. Walk through and fall down the pit.
 * Look for a ??? around where you fell at the pillar. Touch the ??? and select Yes. This will spawn the Ancient Vessel.
 * Kill the Ancient Vessel and inspect the ??? again to dig out the key item.
 * Return it to Maryoh Comyujah who will give you the Cerulean Crystal (key item).

Game Description

 * Mission Orders: