This is your first large dungeon.

Bestiary checklist:
Marsh Cave - B1, B2
Note: you probably want to grind your level a little here because the monsters in the dungeon hit hard. Use Sleep Bag or Tent to heal outside if needed.

Marsh Cave - B2-A
Go top first and enter the F2-A (B). There, you'll find 3 items:
- (C-007) Dagger: Top-right room.
- (C-008) 1180 gil: Top-left room.
- (C-009) Potion: Bottom room, left chest.
- (C-010) 1120 gil: Bottom room, right chest.
Marsh Cave - B2-B
Backtrack to the previous floor, then go to the bottom room, proceed to F2-B (C).
- (C-011) Potion: 1st bottom room from the left.
- (C-012) Boardsword: 2nd bottom room from the left.
- (C-013) Potion: 3rd bottom room from the left.
Enter the 4th room, then exit to the other side to F3.
This level has 16 rooms, so I'll mark them as a grid (row, column).
- (C-014) Phoenix Down: Room (1,1).
- (C-015) 1045 gil: Room (1,4).
- (C-016) Copper Armlet: Room (2,1).
- (C-017) Cottage: Room (2,2) top chest.
- (C-018) Potion: Room (2,2) bottom chest.
- (C-019) 1135 gil: Room (3,3).
- (C-020) Potion: Room (3,4).
- (C-021) Crown (Boss): Room (3,2).
Boss: Psicodemon (x4)
- These guys hit hard, if you lose to them, it means that your level is still low.
- They are weak against "Thunder".