Literature
Mongolian Spectre, Part IV
It was a colossal effort for Wilson, who was weakened severely in both body and mind since the prime of his career, but as the sun descended slowly from its zenith he removed the boulders from around the central pit, watching as one side of its burlap cover collapsed under the mass of sand it had accumulated over the last three years. The hum, which continued its dreary chant undisturbed by the commotion, seemed to have emanated from within. Wilson examined the shaft: about six meters in diameter, it reached down into a naturally-formed cave within the upper Cretaceous stratum - a fact that saved the team a great deal of work. At the floor of