Maybe This Is Where We Put Gateway City

As I have already posted, we need to have a "Gateway City," and because it both needs to be big, as well as something we can reflect sunlight into, I thought doing so as an immense, circular shaft, into the moon, would be a good way to go about it. Looks like happenstance has already done a lot of the digging for us. Now all we need do is build my "Suspended, Underwater, Mass Driver, Launch Tunnel," and will have the logistics capabilities we'll need to get this up and running as it should be.

This Gigantic Lava Tube Could Be Home for Moon Colonists