Recent validation of the Fraction-Network Interface-Zone (FNIZ) model demonstrates that a small set of global distance fractions (lambda/3, lambda/5, lambda/20) encode Earth's spherical harmonic structure and preferentially detect lithospheric interface zones rather than deep mantle or shallow sedimentary features. While this mechanism explains where FNIZ nodes occur, it does not fully explain why these same locations recur as focal points of megalithic construction across cultures and epochs. This paper proposes a synthesis framework: FNIZ nodes correspond to predictable Earth behavior zones, where groundwater, bedrock stability, and subsurface voids respond to environmental stress in repeatable ways. We advance the hypothesis that during periods of regional environmental disruption (flooding, climate transitions, seismic instability), human populations preferentially moved toward caves, shafts, and aquifer-connected subsurface spaces—both at low elevations and high mountain settings—and that survivors subsequently monumentalized these locations to preserve access, memory, and control. Using case studies including Giza Plateau, Sacsayhuaman, and Chavin de Huantar, we argue that megalithic architecture often marks long-lived aquifer-cave nodes rather than symbolic or extractive targets alone. This interpretation aligns FNIZ geometry, spherical harmonic lithospheric structure, and human survival behavior into a unified explanatory model.
Dylan Schofield (2026) studied this question.