- Amazing Construction Equipment Machines Technology At New Level - This Modern Tunnelling Construction Method is Very INCREDIBLE

 Good Lord, the complexity of this process is mind numbing.  But I almost had to get some paper towels as I watched because I was salivating.  I can't even imagine the engineering and design that went into developing the concept, let alone the logistical challenge of keeping this system supplied with raw materials and competent workmen.  Just amazing!!  A truly-excellent infographic explaining modern tunnel construction.   whew...  now i know how they build a tunnels in this day .  Great stuff but the engineers also have to stay awake. In Seattle we had one of these making a tunnel through loose grave under downtown but the engineers had drilled test shafts along the route from the surface and forgot to remove the metal shaft linings. When the drill face hit the metal-lined shafts it destroyed the bits. Correct me if I'm wrong but I think it held up construction for many months.
it's so freaking awesome that make me don't understand how complicated it was, good job.
as my child memory was said " keep digging and you will popped out on other side ".
Well...  that time my mom angry cuz the backyard full of holes lol...  damn. one wouldnt think that it was that many stages of building a tunnel. how many meters per day does it dig/make a complete tunnel  Just look at the way animation is merged with real scene....seemless...and incredible engineering...i dont know y i watched but loved it