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Marsh Cave Chests

Updated: 12 Oct 2025

The Marsh Cave is a challenging three-floor dungeon located south of the Western Keep in Final Fantasy 1 Pixel Remaster. Your primary objective here is to retrieve the Crown for the king in the Western Keep, who is secretly the dark elf Astos in disguise.

The cave contains 16 accessible treasure chests across its second and third basement floors. Many enemies here inflict poison, so bring plenty of Antidotes before entering. Three additional chests on the third floor are locked and require the Mystic Key, covered in our Mystic Key Treasure Run Guide.

Recommended Level: 8-10

Second Basement Floor (B2)

The second basement floor is split into north and south sections, accessed from different staircases on the first basement floor. This floor contains 7 chests total.

ItemLocationType
DaggerB2 North, Northeast roomWeapon
1,120 GilB2 North, Southwest room (right)Gil
PotionB2 North, Southwest room (left)Item
1,180 GilB2 North, Northwest roomGil
BroadswordB2 South, Second room from leftWeapon
PotionB2 South, Southwest roomItem
PotionB2 South, Third room from leftItem

B2 North Section

Dagger

Dagger chest in Marsh Cave B2 North northeast room
A Dagger found in the northeast room.
  • Location: B2 North, Northeast room
  • Description: Basic weapon that likely won’t be an upgrade at this point. Can be sold for Gil.
  • Usable by: Warrior, Knight, Thief, Ninja, Red Mage, Red Wizard, Black Mage, Black Wizard

1,120 Gil

1,120 Gil chest in Marsh Cave B2 North southwest room
A stash of 1,120 Gil in the southwest room.
  • Location: B2 North, Southwest room, right chest
  • Description: Helpful funds for purchasing equipment and magic.

Potion

Potion chest in Marsh Cave B2 North southwest room
A Potion in the southwest room's left chest.
  • Location: B2 North, Southwest room, left chest
  • Description: Extra healing for the journey ahead.

1,180 Gil

1,180 Gil chest in Marsh Cave B2 North northwest room
The largest Gil stash on this floor at 1,180.
  • Location: B2 North, Northwest room
  • Description: The largest single amount of Gil on this floor.

B2 South Section

Broadsword

Broadsword chest in Marsh Cave B2 South
A powerful Broadsword upgrade for physical attackers.
  • Location: B2 South, Second room from the left
  • Description: Solid weapon upgrade for your Warrior or Red Mage, providing a good boost in damage.
  • Usable by: Warrior, Knight, Ninja, Red Wizard, White Mage

Potion

First Potion chest in Marsh Cave B2 South southwest room
First Potion in the southern section.
  • Location: B2 South, Southwest room (first from left)
  • Description: Additional healing item to stock up your inventory.

Potion

Second Potion chest in Marsh Cave B2 South
Second Potion found in the southern section.
  • Location: B2 South, Third room from the left
  • Description: Another Potion for the challenging battles ahead.

Third Basement Floor (B3)

The deepest floor of the Marsh Cave contains 9 accessible chests, including the Crown. This floor has a complex layout with many small rooms.

ItemLocationType
Phoenix Down1st room (northwest)Item
Potion6th room (right)Item
Cottage6th room (left)Item
Copper Armlet5th room (far west)Armor
1,045 Gil4th room (northeast)Gil
Potion12th room (east side)Item
Crown10th room (center)Key Item
1,135 Gil11th roomGil

Phoenix Down

Phoenix Down chest in Marsh Cave B3 northwest room
A valuable Phoenix Down on the lowest floor.
  • Location: B3, 1st room (northwest)
  • Description: Revives a fallen party member. Very useful for the upcoming Piscodemon boss battle.

Potion

Potion chest in Marsh Cave B3 6th room
A Potion in the 6th room's right chest.
  • Location: B3, 6th room, right chest
  • Description: Healing item found alongside a Cottage.

Cottage

Cottage chest in Marsh Cave B3 6th room
A fully restorative Cottage for use on the world map.
  • Location: B3, 6th room, left chest
  • Description: Fully restores HP and MP on the world map. Save this for after defeating the Piscodemons.

Copper Armlet

Copper Armlet chest in Marsh Cave B3 5th room
A Copper Armlet that any class can equip.
  • Location: B3, 5th room (far west, second from the top)
  • Description: Solid defensive item that all classes can equip. Give it to your most fragile party member.
  • Usable by: All classes

1,045 Gil

1,045 Gil chest in Marsh Cave B3 northeast room
1,045 Gil found in the northeast room.
  • Location: B3, 4th room (northeast)
  • Description: Good amount of Gil to help fund spell purchases in Elfheim.

Potion

Potion chest in Marsh Cave B3 12th room
The final accessible Potion in the Marsh Cave.
  • Location: B3, 12th room (east side)
  • Description: Last accessible Potion in the dungeon.

Crown (Key Item)

Crown chest in Marsh Cave B3 surrounded by statues
The Crown, the main objective of the Marsh Cave.
  • Location: B3, 10th room (surrounded by statues, left of the 1,135 Gil chest)
  • Description: The key item you came here to retrieve. Taking this to the king in the Western Keep will trigger the reveal that he is actually Astos, the dark elf.

Warning: Opening this chest triggers a boss battle with four Piscodemons. Make sure your party is fully healed before grabbing the Crown. Open all other chests on this floor first.

1,135 Gil

1,135 Gil chest in Marsh Cave B3
Gil found near the Crown's location.
  • Location: B3, 11th room (right of the Crown’s room)
  • Description: Grab this chest before taking the Crown.

Locked Chests

Three chests on the third basement floor are locked and require the Mystic Key to access. All three contain monster encounters. These chests are covered in our Mystic Key Treasure Run Guide.

When to Visit

First Visit: Chapter 3, after meeting the king in the Western Keep who requests you find his Crown.

Second Visit: Return with the Mystic Key to collect the three locked chests on B3.

Part of our Final Fantasy 1 Pixel Remaster Chest Locations series. Next: Giant’s Cave Chests.