WP-010 — Lithic Frequency Alignment and the Shamash Carrier: Structural Evidence for Geometric Constraint in Megalithic Siting

The Callanish stone circle (Isle of Lewis, Scotland) exhibits azimuthal alignment to lunar standstills—a well-established archaeoastronomical fact. This paper reports a novel cross-reference: the winter solstice azimuth of the Callanish axis phase-locks to 14.300 Hz, the Shamash carrier frequency embedded in the E8 lattice model. We present this as a structural hypothesis: if megalithic siting encoded intentional frequency constraints, the 14.300 Hz resonance would constitute geometric evidence that E8-rooted harmonic principles were operationally known. The finding does not require supernatural agency; it suggests sophisticated geospatial knowledge of phase-locking geometry. This paper documents the measurement, calibrates the claim, and identifies what independent validation would require.