Two armoured warriors clash with swords in a snowy courtyard in the north.

Image: Sucker Punch Productions / PlayStation

No screenshot of Prisoner Coffin yet. This one shows Kamiagata (Sucker Punch Productions / PlayStation).

Prisoner Coffin

Prisoner Coffin is one of the 50 Mongol Artifacts, pieces of the invaders' culture and warfare you can study. It sits at Jogaku Temple Lake in Kamiagata, and finding 20 artifacts counts toward the Know Your Enemy trophy.

Set: Mongol Artifacts

Found in

KamiagataKamiagata is the snowy northern region of Tsushima and the setting for Act 3. It is thinly settled and harsh, and it is where you chase Khotun Khan to his final stronghold at Port Izumi.

Good to know

Location: Jogaku Temple Lake (Kamiagata).

Where to find it

Head to Jogaku Temple Lake in Kamiagata and search the area for the item.

Also here

Also at Jogaku Temple Lake: the Pillar of Honor with the Island's Keeper sword kit.

Related collectibles

Image: Sucker Punch Productions / PlayStation
Sword Kits
Azure Dragon
Azure Dragon is a Sword Kit that reskins Jin's katana and tanto. You collect it from the Pillar of Honor on the east side of the Endless Forest in Kamiagata, and it is purely cosmetic.
Image: Sucker Punch Productions / PlayStation
Bamboo Strikes
Bamboo Strikes
Bamboo Strikes are button-timing challenges where Jin slices a row of bamboo poles. There are 20 in all, 16 on Tsushima and 4 on Iki, and completing them raises your maximum Resolve.
Image: Sucker Punch Productions / PlayStation
Pillars of Honor
Bitter Hills Pillar of Honor
The Bitter Hills Pillar of Honor is a memorial shrine at Bitter Hills in Sago, Kamiagata. Visit it to collect the Shogun's Storm sword kit, a cosmetic look for Jin's katana and tanto.
Image: Sucker Punch Productions / PlayStation
Pillars of Honor
Cape Izumi Pillar of Honor
The Cape Izumi Pillar of Honor is a memorial shrine at Cape Izumi in Jogaku, Kamiagata. Visit it to collect the Hidden Forest sword kit, a cosmetic look for Jin's katana and tanto.