Derinkuyu, Cappadocia, Turkey (pic)
Shanghai Tunnels, Portland, USA
Edinburgh Vaults, Edinburgh, United Kingdom
Dixia Cheng, Beijing, China
Wieliczka Salt Mine, Krakow, Poland
Coober Pedy, Far North, Southern Australia
RÉSO, Montreal, Canada
Setenil de las Bodegas, Spain
Pilsen Historical Underground, Czech Republic
Tunnels of Moose Jaw, Moose Jaw, Canada
Greenbrier Bunker, West Virginia, USA
Catacombs, Paris, France
City Market Catacombs, Indiana, USA
Old Sacramento Underground, California, USA
Seattle Underground City, Pioneer Square, Seattle, Washington, USA
Underground Salt Museum, Kansas, USA
Butte Underground City, Montana, USA
Mega Zips, Kentucky, USA
So, what cool Martian underground cities will there be? Imagine being a Martian and digging your own city out of the Martian soil.
>>11529424Electric motors for hydraulics, lots of heat sinks to cool equipment that sees lots of friction, probably some liquid cooling loops, etc. The main problem I see is the cooling and lubrication during initial digging. Moving loose stuff will be easy, but excavators that much first break through unbroken ground will need cooling. They need that already on Earth, but on Mars the atmosphere is so thin that they won't cool off nearly as quickly. Any liquid you use will be precious and keep internally for cooling. It is all doable, but sounds like a whole new field of fun engineering challenges.
The equipment may have places for crew, but they will probably be unmanned. I don't know how much redundancy and safety they will have but each piece of heavy equipment may have a place pressurized for people and supplies in case of emergency. You wouldn't want some ultra smarts out there trying to fix something only to have their own gear fuck up and they die from something simple when they could either hop in and be safe or tether their life support to something.
It will be interesting. I wonder how many of us now will still be alive during that time.
/coffee posting
