In the novel, this Dungeon Gate was put in a Greenhouse and all traces of it concealed. It make others unable to know it was here.
In this chapter, It's in plain view, in a crater, with Apocalypse style city in the background... How can the other Guilds and Government can't know it's here? And if everyone can see it, what's the point of the broker? (In the novel, the Broker is camouflaging and selling Gates Locations to hunters for money and/or % of the loot. If it's in plain view, the first civilian passing by can report it - if he don't kill them...)
@maisonaustyn @Kairuwuu
And yes, it's a Kobolt/Dragonewt Gate (In the novel translation, it's Kobolt, so Author craziness or Manwua traduction error).