[TigerLikesRooster]

RE #10

I agree. To cite an example, there are many funny-looking gates over the road to the north of Seoul. They have two concrete slabs working as pillars on each side of a road. And the really big concrete slab on the top, too big. Once N. Korean troops invades, the pillars are to be demolished and the top part will be on the ground, blocking the advance of N. Korea columns.

[DugwayDuke]

And, if you noticed, those pillars supporting those big slabs go straight down, then taper to a much smaller diameter, and then expand to their original width. Also, some of those "cuts" that the roads go thru and the "big slabs" go across are thru berms that seem to rise magically out of the surrounding landscape. BTW, those big slabs were there in the early 70s when I was a pup with 2ID.