H 3 — NGS TU0569

This triangulation station is part of the National Geodetic Survey's horizontal control network, which establishes the geometric framework for surveying, mapping, and construction across the United States. Located at coordinates 21.57239°N, 158.27502°W in the Hawaiian Islands, this trig point contributes to regional geodetic infrastructure in an area where accurate positional reference is essential for civil engineering, land surveying, and scientific applications. Triangulation stations of this type were historically established to provide precise control points for detailed topographic and cadastral mapping. Verification and documentation of such benchmark locations remain valuable for modern surveying operations, as they may serve as recovery references or validation points for contemporary positioning systems. Professional surveyors should note that elevation data for this station is not recorded in available documentation.

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