How good would it be to live in an entire city carved and sculpted into canyons so large they make earths look pathetic. Ben Bova's "Welcome to Moon Base" has

How good would it be to live in an entire city carved and sculpted into canyons so large they make earths look pathetic. Ben Bova's "Welcome to Moon Base" has a lot of content and estimates on this, although not at that scale. It's specific to the moon, so things like low-gravity self-powered flight might not make it into the recreation possibilities of Mars, but as for living underground in huge vaults made of the regolith, it makes an interesting case. http://www.goodreads.com/book/show/1005249.Welcome_to_Moon_Base http://www.goodreads.com/book/show/1005249.Welcome_to_Moon_B...