That's Adytum. It's a slave labor camp run by a group called the Regulators, but they tell everyone it's a "town". They come here and take our people to work them until they die. Then they come and take more of us.
In any case, the Vault Dweller needs to go to Adytum and kill all the Regulators, their leader and Jon Zimmerman himself. If done himself, the Vault Dweller will get 500 XP, while with the aid of the Blades 1500 more XP.
Should the Vault Dweller delay the attack, in order to speak to Zimmerman again you must directly select the dialog option, Razor replies that this may not be a good idea.
After choosing the above dialog option, entering Adytum, and returning, Razor will have disappeared. None of the other Blades react to this, and it is impossible to launch the Blades' attack on the Regulators. After eliminating them single-handedly, however, Razor reappears in the Blades' hideout, implying that she fled the area to escape Regulator reprisal.