The mountain that breathes heat. Forges fed from below.

One site needs 2.4 megawatts of continuous acoustic power for concealment alone. Forty-three sites: on the order of 103 megawatts. Manufacture and thermal management push the compiler's city budget toward 500. The source is not a furnace. It is the upper mantle, tapped through engineered vertical conduits: 200 to 400 metres across, running from the null-zone floor through fifteen to forty further kilometres of crust, in the best-resolved cases through the Moho. Low-velocity, geometrically regular, not a magma dyke. Magma pinches, branches, follows weakness. These do not.

Each city shows two to five siphons at the periphery: redundancy. Ductile creep above 300 °C would close an unmaintained channel in tens of thousands of years. They have not closed. The Kola Superdeep Borehole, twenty-two years of Soviet drilling, reached 12,262 metres and was abandoned at 180 °C. It is a scratch on the same section. The compiler has not been below the crust. The compiler has the seismic. The seismic is enough.