Ground Coupled Resonant Behavior and Environmental Sensing Potential of Large Limestone Structures Along the Western Nile Escarpment

Large, terrain‑embedded limestone structures can exhibit stable low‑frequency resonance, strong ground coupling, and predictable mechanical responses to environmental forcing. This study evaluates six such structures distributed along the western Nile escarpment and examines their potential to function as a sequential, passive environmental sensing chain. Although historically known as pyramids, the analysis treats them as large‑scale resonant cavities with distinct internal geometries, material distributions, and coupling interfaces. Using architectural measurements, cavity‑mode analysis, and ground‑wave propagation principles, the study assesses each structure’s capacity to register changes in subsurface tension, atmospheric pressure, and low‑frequency mechanical transients. One structure—Khufu—exhibits a uniquely favorable configuration for generating a mechanically keyed infrasound transient capable of propagating to the southern nodes under stable evening atmospheric conditions. Results demonstrate that, in principle, a distributed environmental sensing network could be formed from large, passive, ground‑coupled resonant volumes constructed from limestone and granite. The study does not propose ancient intentionality; it evaluates only the physical feasibility of such a system.