Lady of the Yellowstone
by Mike Kennedy
Purdue geologists discover the first of the lava and propose the plan. When one or both of the tunnels connect, the Yellowstone magma chamber will drain, releasing pressure, and giving mankind a century, or an age, or an epoch in which to prepare once more. Tunnel boring machines, each the size of attack submarines, have been assembled beneath the planet's crust within the Madison Valley Abyss.