Report Offensive Message

I hope you are not serious when you make this comparison. The sinking ship can settle directly onto the tube. The crashed "plane" will still be on the top of the mountain or on the side of the mountain. Although the integrity of the tunnel may also be compromised.
Between the cost of the development, cost of building, maintenance issues, emergency issues, this will not happen in our lifetimes.
What about the faults, earthquakes, tsunamis, fire in that oxygen rich atmosphere? Great idea, logistically not feasible.