Here's how to open the vault at Doom's Domain.
Where's Doom's Domain
The brand new POI is one of the largest on the map, and it is one of the easiest to find.
Player's will find this POI exactly where Pleasant Park was last season.
This is directly north of The Authority; and it takes up a large section of the map.
In order to open the vault you are going to need to grab the keycard for Doom's Domain.
This can be found by finding and eliminating Dr. Doom; who is the boss of this POI.
Dr. Doom can be found inside the massive mansion, which is located on the north side of the POI.
DOC - Dr. Doom has amazing super powers!
Once you eliminate Dr. Doom and grab the keycard; you are going to need to head to the vault itself.
This is perhaps the most confusing part of Doom's Domain; as the vault is not located in the mansion.
Instead, it can be found underground which YouTuber VoxelEra has shown above.