The Ring of Fire is the hardest part of the DayZ version from NLCraft, because there spawn giants.

 Within the ring of fire are statues of the Owners, in the middle is a chest. 

There is a door that leads to underground area (name: Giants Cave ) where you can find millitaire chest with diamond sword, for that you can find this chest, you will need a to fight a Giant to get there.

Amout of chest:

* Military (HIGH) 1x