Gta Underground Tunnel

[Totaly Pavlina]

WhenI mentioned my desire to explore this hidden tunnel N, H, and C wanted in on the adventure. Since the endeavor was likely to include some facet of breaking-and-entering, four heads were definitely better (and more fun) than one.

Strategy two: talk to the circulation desk, and convince them to let us into the tunnel. I approached the circulation manager with two goals in mind: confirm the location of the tunnel door, and perhaps even convince him to let us inside. The former goal was barely achieved and the latter was an absolute epic failure.

This conversation was not going very well, and I quickly realized he was definitely not going to aid our efforts in confirming the location of the entrance, let alone opening the door. He warned me that if I attempted to open the door without a key, the fire alarm would sound, and Olin had security cameras stationed all over the place. I quickly changed up my conversation strategy into pure reconnaissance gathering.

Army 2(the attacking army) has an underground tunnel under the city. The tunnel circles the city under the outskirts, has a few spokes (between 4-10, haven't decided yet)going towards the center where they plan to spring from the ground and attack Army 1, and one long tunnel that goes back to the entry point. So, wagon wheel on a stick.

Army 1 has learned of this attack, and needs to stop it. Army 1 also has a high ranking Army 2 official willing to work with them(as long as the plan isn't blatant suicide). Army 2 thinks this officer was captured, and if he appears in the tunnel after 'escaping' he can try to do something.

My first idea was to gas the place but that's not interesting, and big explosives would just bring down the city, and although that would look cool I need the city later. I thought maybe Army 2 officer/Army 1 spy could run through and drop methane into the tunnels, then get out and Army 1 could light a match and use up all the oxygen/burn the soldiers, but idk if that would bring down the city. Any suggestions?

Bulk-pumping gasoline / diesel into known exits to turn the tunnel into a barbeque. [EDIT] Even simply burning off all the oxygen using combustion would render the tunnel uninhabitable; military CBRN gear (gas masks), I believe, are filters; they do not have an oxygen supply. [EDIT #2] CBRN gear might not protect against gasoline fumes either.

Personally, I don't see any problem with thermobaric / fuel-air explosives or even natural gas to create an explosion. The blast will be channeled along the tunnels and so negligible damage should occur to buildings (remember they are designed to withstand earthquakes).

[EDIT #2] Oh, how could I forget, there's all sorts of other fun things available in a major city. According to Wikipedia: "Manufacturing now ranks third among Phoenix's industries, and includes the production of ... chemicals, and processed foods."

The defenders would also have access to the chemical plants and chemical tanker cars from the rail depot that supply them. Of course, the plants also are staffed with a handy crew of chemical engineers to do something creatively unpleasant with them to send flowing through a tunnel. All sorts of acids or other toxic compounds might be possible. Military CBRN equipment would probably not provide protection against these.

You have an attacking force coming. You know exactly where they will come - a choke point where they must emerge from the tunnel. Once they are out you can prevent them moving farther into the city and you can prevent them from leaving the way they came. These guys are boneheads! Let them come!

You know where they will come out of the ground. Fortify the area around that. Do it in a way not immediately obvious from the tunnel mouth. They will come out of the ground thinking they are stealthy ninjas. They will quickly realize that away from the immediate exit from the tunnel, they are surrounded by collapsed buildings, walls, barbed wire and gun emplacements.

They will want to turn around and go back the way they came. But no. You collapse the tunnel behind them or fill it with rubble. Ideally this occurs quietly, about 500 meters behind them. Then when they retreat from the untenable situation topside they find themselves in a short dead end tunnel.

No tunnel is too big to gas. You can gas whole cities. But no gas. Phosgene oxime (not technically a gas, but often aerosolized) would even coat the surfaces in powerful blistering agent, making the tunnel virtually unusable. Nerve agents in tiny parts per billion would make the air unbreathable as they evaporated and can be absorbed via skin over time. They often are contact poisons that really affect those who touch them. Shellfish toxin is nasty and a vial you can hold in your hand will kill a whole city. So chemical weapons but not gas.

I'm a biology guy, but good suits will protect you, and the tunnel can be sterilized. Anthrax spores will render the place pretty unuseable, but have a nasty tendency to spread a lot, since infection spreads (especially near a civilian population center) and they track on shoes, etc. Anthrax spores are REALLY hard to get rid of, though, so the tunnel is likely unuseable. But generally biological weapons spread over time and your enemy has to know and believe in them to be deterred.

My best thought is radiation. You can try a dirty bomb (non-nuclear radiological) where the radioactivity means people don't die right away, but require extensive medical treatment (debilitating to the enemy ability to fight war). The tunnel is filled with lethal radioactives that render it uninhabitable. An explosion scatters the stuff around very efficiently. Long term, this can spread into the water table, but war is full of desperate compromises. Your enemy will likely have radiation detection equipment, and if not will rapidly discover the attack as soldiers quickly get sick. Radiation is easily verifiable with equipment unlike biologicals.

Finally, how about area denial munitions? It's a fancy way of saying tiny anti-personnel mines. They are usually deployed from aircraft, it would be tricky to get missiles launching tiny mine bomblets underground, but once you did, the large but relatively small cave would become a giant booby trap. People moving around would set off explosives, and they're all small (designed to kill/maim individuals) so they won't "bring down the house." The weapons are already in the USAF arsenal, so you wouldn't need to make something new. Bigger munitions will blow up vehicles as well, so if the invaders have "tunnel tanks" and earthmoving equipment, it can be destroyed as well.

Propane: Liquid propane expands at the rate of 10,000:1. That means a gallon of propane makes 10,000 gallons by volume of ignitable gas. (I haven't verified that number, it was what Utah State claimed in their training manuals for licensing to dispense liquid propane. I'm just rolling with it.) A little math to estimate the amount of you need... fill tunnel... add match. The resulting "boom!" coming out of the open end of the tunnel might be heard in Kansas.

Sewage: Tell me Phoenix doesn't have enough of this. ("Alright everybody, we need an emergency blow! Eat all the chili you can and flush all at the same time in an hour!") You'd want to push this in at several points. Might not stop Army #2... but they'll wish they were anywhere else while they attacked.

It's worth noting, after saying all that I have, that you could just have the city's various industries divert their usual dumping of toxic industrial waste in the local rivers into the tunnel. Green Peace will freak out, but the population's option is to endure slavery under the iron boot of Army #2, so I doubt you'll hear too many complainers.

BTW #2, I didn't suggest gasoline because, being a liquid, it's expansion into gaseous form would be too slow. When you lit the match, you'd blow the city sky high. There'd be too much of it near the injection points.

Do this by stockpiling large quantities of liquid nitrogen ahead of time (just requires energy to extract from air - which is mostly nitrogen). At the time of the attack, pour liquid nitrogen into available openings. The cold will kill anyone too close to an opening. As the liquid evaporates the gaseous nitrogen will displace all the oxygen from the tunnels.

The above-ground damage and causalities will be minimal. You will want to evacuate the above-ground civilians ahead of time. The cloud of gas (really a lack of oxygen) will dissipate in a few days (or less if there is a good wind).

If your spy can alter the tunnel plans to have a slight dip, with ideally a curve in the tunnel at the bottom the nitrogen could be pumped in, as a liquid, filling this dip with a lethal concentration. Soldiers would walk in, then die. The curve might stop soldiers at the back noticing that their friends had dropped dead.

A high concentration of nitrogen will cause fainting, then death, due to lack of oxygen. It's worth noting that ill effects from this won't be felt until soldiers are near losing conciousness - unlike smoke, it doesn't trigger CO2 receptors in the lungs that tell you that the air is bad to breathe.

Slightly further away, soldiers are likely to behave erratically, because of low oxygen. With any luck, a tunnel full of armed men with diminished reasoning capacity, on high alert, would turn into a bloodbath.

The liquid nitrogen can be dispersed through pipes, either that have been cut through by the tunnel already, or by drilling small holes through the tunnel roof.Very little specialist equipment is needed to handle it, it's non toxic (once it disappates) and presents no risk to the city or its inhabitants above. It won't be filtered by standard chemical filtering gear, and would require an air supply to mitigate.

The tunnel system follows a wheel-and-spokes arrangement. The invading army uses the spokes to travel from the outskirts of the city into the city center. Let me word that slightly differently. The invading army has loaded themselves into a enclosed tube that's several miles long and only has exits at the extreme ends. That's pretty much the worst situation an army could put itself in. All you really need is a good old-fashioned ambush.

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