[Mister Da]

Carbon monoxide gas - colorless, orderless, deadly.

I would think seismic testing, such as oil drillers do, would reveal many of the tunnels & bunkers.

I envisioning a tunnel system much like the VC used in South Vietnam. Many miles of interconnected tunnels, levels, bunkers, etc., probably booby trapped.

The tunnels are used as storage areas for rockets & other weapons, therefore the Israelis must search & destroy them from the Gaza side, but I imagine they would attack any discovered tunnel from either side.

Are there any old tunnel rats out here on FR?

I'll be they can give some good insight on what the Israelis face underground.

[longfellow]

Bunker buster.

[DCBryan1]

The best way to deal with subterranian engineered structures is with low yield nuclear weapons:

Absolute SAFEST way to destroy underground structures with almost ZERO surface radiation (plus you create a nice, deep, nuclear-engineered ditch.

Just look at the photos from Nevada. If they were all in a line, it would be a perfect, man made barrier:

The Isreaelis have all that they need: 1) CAUSE, 2) Nuclear weapons, 3) A buffer to limit civilian casualties, 4) An urgent need to collapse the tunnels and create at PERMANENT no-mans land. 5) Finally, it shows the world that Israel has the resolve and dedication to use every tool in its arsenal, and sends a message to the rest of the Mud-slime world that they are NOT afraid to use nuclear weapons (albiet, in a scientific, nuclear-engineering sense):

[AlphaOneAlpha]

“Are there any old tunnel rats out here on FR?”

Yes.
I saw pictures of Gaza tunnels. They were huge...large enough for big trucks could drive through them.... made of concrete, much like vehicular tunnels in the U.S.
Much grander than anything I saw in RVN

In what was known as I Corps, which was the northern most and mountainous section of South Viet Nam, most of the tunnels were primative and very small, 3 to 4 feet wide and 5, maybe 6 feet high, at most. Ceiling and walls were lined with wood. Nearly all of the tunnels were zig-zag’d every 10 or 20 feet. There were always escape hatches here and there in the roof. We would look for those hatches before entering a tunnel and pop a couple of smoke grenades down to see there the smoke showed itself. Crawling on your belly, in the dark, no helmet/no flack jacket, with just a .45 looking for bad guys creates a helluva rush.