Portal in Limansk

An unknown person sent you the key to the portal to Dead City, located in Limansk.
==Walkthrough==
The basement pictured in the PDA notes is a house on the west edge of Limansk, off of the town square fountain.
The stairway at the entrance is mined. First three mines are easily visible and can be picked up. The fourth one is inside the anomaly blocking the staircase; you can either pick it up (it's hard), or detonate it.
Run through the anomaly and immediately hide behind the cover, because there's a Gauss turret firing through the door. There are two more in the next room. One of them is behind the door and can fire straight through it. You can simply run up to it directly, as it's unable to fire on targets at the point blank range.
In the room with the columns, you'll see a door partially walled with bricks, with the code terminal to the right and lever to the left. Enter the code you got in the Picture of the Monolith (887766).
Enter the code from the Wishgranter photograph - 887766 - into the terminal. Back up a bit and drop the cigar box into the center of the room, where the "vortex" effect is going off. Picking up the isomorphs resulting from this disables the teleport in front of the lever.
Hit the lever, and stand in the This will teleport you into the walled-off room in front, with the actual portal to Dead City.
The safety system will warn you that you're unable to pass through the portal with your equipment. There's a safe in the room; inside it, you can find a Rucksack. You are not required to use it - upon activating the portal, every piece of equipment you can in it, including your undroppable quest items, armor, weapons, devices, and all artifacts in the belt will automatically put into the safe. Nobody will steal it; you'll be able to reclaim them later down the story.
After dropping everything, walk into the teleporter pad, and travel to the Dead City.
==Notes==
* You will not have access to any kind of NVD in your brief trip to Dead City. It's best to engage the teleporter in the early morning so you'll have plenty of time to get things done in the daylight.
* You can't smuggle any items into the Dead City, but it's possible to roll some random stashes inside it before teleporting there, and at least one location is reachable on your arrival.
* If you lost the cigar box somehow (???), you can just stand in the dropping area and wait for 200 seconds, then the lever will still be unblocked, even without the box. This is a foolproof measure to avoid softlocks. Keeping the box to yourself is not worth it though, as it's useless otherwise.
==Bugs==
* It's been reported that the teleport will destroy the decoders obtained in the Mystery of the islands if you have any with you. (need someone else to confirm)