Aside from questions of authenticity, these underground passages seem rather inefficient. Multiple routes, longer routes. Digging large tunnels is an expensive, slow, and manpower intense process.
How long does it take to bore out a mile with the latest boring technology? How many miles can it cut before major overhauls are required?
The southwest is massive, those locations are hundreds of miles apart with extreme geological features.
No way that is true. The average speed of a TBM is 15 meters/day. The latest plasma cutting technology boasts it can dig 100x faster, which at most is 1500 meters/day, not quite a mile.
From what I read about Alice is that it bore out a 2.6 mile tunnel in about 11 months, anf that is incredibly fast.
Look up Alice- the tunnel making machine. It uses nuclear reactions to melt the rock as they’re cutting through it creating a perfect tunnel. It works fast.
Well, I don't know. I wasn't around centuries ago. But, I have read about places that have been unearthed in recent years that are magnificent underground places where thousands of humans lived a long time ago:
I'm not saying caves don't exist, but none of those mentioned are in the southwest. The Feds also use massive cave systems for long term logistics in the Ozarks.
It's a fantastic claim that there's a 5,000 underground rail system from LA to Kansas. But the only evidence is hearsay and a handwritten map from 1970.
Aside from questions of authenticity, these underground passages seem rather inefficient. Multiple routes, longer routes. Digging large tunnels is an expensive, slow, and manpower intense process.
I think a lot of the tunnels were already there, the planet has many hollow cavities in it
I can't imagine those tunnels are suitable for high speed trains
I can.
Elon Musk owns a massive tunnel digger.
How long does it take to bore out a mile with the latest boring technology? How many miles can it cut before major overhauls are required? The southwest is massive, those locations are hundreds of miles apart with extreme geological features.
They can bore up to 7 miles per day with Alice.
No way that is true. The average speed of a TBM is 15 meters/day. The latest plasma cutting technology boasts it can dig 100x faster, which at most is 1500 meters/day, not quite a mile.
From what I read about Alice is that it bore out a 2.6 mile tunnel in about 11 months, anf that is incredibly fast.
And back in the days when those tunnels were probably built, it was a lot less crowded out west. Now the West is crawling with people it seems.
A.L.I.C.E.- boring machine. See my other comments.
Look up Alice- the tunnel making machine. It uses nuclear reactions to melt the rock as they’re cutting through it creating a perfect tunnel. It works fast.
Maybe they are using existing ones that were there for centuries and they are simply connecting them.
What tunnels were there for centuries?
Some of the natural ones are ancient lava tubes linked to the Yellowstone caldera.
Well, I don't know. I wasn't around centuries ago. But, I have read about places that have been unearthed in recent years that are magnificent underground places where thousands of humans lived a long time ago:
Longyou Caves in China, discovered in 1992 https://www.youtube.com/watch?v=YCgeN8OB4yI
Derinkuyu underground city discovered in 1963 https://www.atlasobscura.com/articles/derinkuyu-turkey-underground-city-strange-maps
Kaymakli and Cappadocia Underground Cities discovered in 1964
https://hellojetlag.com/kaymakli-underground-city-cappadocia/
I'm not saying caves don't exist, but none of those mentioned are in the southwest. The Feds also use massive cave systems for long term logistics in the Ozarks.
It's a fantastic claim that there's a 5,000 underground rail system from LA to Kansas. But the only evidence is hearsay and a handwritten map from 1970.