The Final Confrontation
Items:
Save Crystal, Guard Source (x3), Mind Source (x2), Magic Sourse, Elixit, "HP Absorb" Materia, Power Source (x2), Hero Drink, Megalixir
At the start you'll notice a cave, which is your way back to the Highwind just in case you need to return for anything. Also, notice the first chest, because inside is a very important item - the Save Crystal.
Warning:
There are no Save Points within the Crater, but the Save Crystal enables you to create a single Save Point anywhere you like. Keep this with you until otherwise noted. Creating the Save Point too far out can be very frustrating.
Note:
Nearly every creature in the Crater has the ability to instantly kill your characters. Take lots of Phoenix Downs and Ethers.
Ready to Go? Follow the twisting path into the crater. At the cliffs, take the right path down and then climb back up the left. This inables you to collect the various items located along the path in the most efficient manner.
When you first enter the next area, go to the left and explore the cave. You'll need to return to the top and take the right path to actually access to the next area.
You meet up with the rest of the group here and get the chance to split the entire party in two. Eventually, you'll want to explore both sides, but for now go to the right. This is a decent spot for the Save Point, but you may prefer something closer to Sephiroth.
Note:
Be careful which way you send your characters. Only those sent down the same path with Cloud will be able to join him until you reach the crater's center.