the "rods from god" weapon can effectively take care of these bases, as long as they know their exact location...

http://www.popsci.com/scitech/article/2004-06/rods-god

the "rods from god" weapon can effectively take care of these bases, as long as they know their exact location...

http://www.popsci.com/scitech/article/2004-06/rods-god

Footfall is a 1985 science fiction novel written by Larry Niven and Jerry Pournelle. It was nominated for both the Hugo and Locus Awards in 1986,[1] and was a No. 1 New York Times Bestseller.[2]


After their initial assault, the Fithp land ground forces in the center of the North American continent, primarily in and around Kansas. They defeat efforts by a National Guard detachment (and, somewhat later, three American armored divisions) to dislodge them by using orbital lasers and

barrages of kinetic energy weapons

, but a combined Russian and American nuclear attack wipes out their beachhead. The Fithp, who are familiar with nuclear weapons but prefer to use cleaner ones, are shocked by what they consider the barbarity of humans' willingness to "foul their own garden" with radioactivity. Human protagonists, however, are exultant with victory.

https://en.wikipedia.org/wiki/Footfall

quite entertaining if you like the Genre!

yea, that concept was first proposed in the 60's, and i'm almost sure they've built a few of them... cheap, clean, and can get very deep in the earth...

Footfall is a 1985 science fiction novel written by Larry Niven and Jerry Pournelle. It was nominated for both the Hugo and Locus Awards in 1986,[1] and was a No. 1 New York Times Bestseller.[2]


After their initial assault, the Fithp land ground forces in the center of the North American continent, primarily in and around Kansas. They defeat efforts by a National Guard detachment (and, somewhat later, three American armored divisions) to dislodge them by using orbital lasers and

barrages of kinetic energy weapons

, but a combined Russian and American nuclear attack wipes out their beachhead. The Fithp, who are familiar with nuclear weapons but prefer to use cleaner ones, are shocked by what they consider the barbarity of humans' willingness to "foul their own garden" with radioactivity. Human protagonists, however, are exultant with victory.

https://en.wikipedia.org/wiki/Footfall

quite entertaining if you like the Genre!

Excellent book. They combined some of the characters in the popular "Ringworld" series. The books are well known for being the "hard science" form of science fiction where many of the concepts described could actually be done and maybe someday will be done.