Reports of anomalous phenomena frequently cluster around specific geographic regions. Conventional explanations often invoke psychological, cultural, or speculative causal narratives, while dismissals attribute such reports to coincidence or misinterpretation. This paper introduces Plausibility Gradient (PG) as a structural framework for understanding why certain configurations of phenomena become perceptible or persistent in specific locations without invoking violations of physical law or assumptions regarding agency. Using principles from Coherence Theorem (CT), electromagnetic (EM) field behavior, and geophysical boundary analysis, this work proposes that localized widening of plausibility gradients permits normally suppressed configurations to transiently manifest across biological, sensory, and instrumental systems. Skinwalker Ranch is presented as a non-exclusive example of such a boundary zone.