Underground Great Wall of China
artifactNations & Geopolitics · Defense & Military-Industrial
China hid its nuclear missiles inside thousands of miles of secret tunnels so a first strike couldn't wipe them out.
Who they are
The Underground Great Wall of China, a vast tunnel network run by the PLA Rocket Force.
What they do
It's a huge subterranean system built to move, store, and hide China's nuclear missiles.
How it works
Acknowledged by the state in 2009 and estimated by a Georgetown analysis (Philip Karber, 2011) at over 5,000 km, it lets China conceal and transport its long-range missiles so they'd survive an enemy first strike and still be able to retaliate.
Why it matters
The engine uses it as the proven, sovereign-scale benchmark that nation-sized underground construction is real and feasible — the standard against which smaller projects like a private tunnel loop are measured.
The engine's record — word for word
PLA Rocket Force subterranean tunnel network. State-acknowledged 2009. Georgetown University analysis (Philip Karber 2011) estimated 5,000+ km. Purpose: transport, store, conceal intercontinental ballistic missiles (DF-5 class) enabling mobile survivability against first strike → robust second-strike capability. Report #75: the fully-corroborated international benchmark proving nation-state-scale subterranean architecture is technically and economically feasible. **Report #85 (May 8 2026):** part of the engine-canonical `subterranean_civil_defense_continuity_substrate_class` cluster. The Underground Great Wall remains the sovereign-scale benchmark (PLA Rocket Force ~5,000+ km, Karber 2011 estimate); The Boring Company's 68-mile Vegas Loop master plan is the first private-operator instance approaching sovereign-scale linear measure.
Follow the trail
Walk this on the live map →