CAMP ERDMAN FLAGPOLE — NGS TU1560

This triangulation station is part of the National Geodetic Survey's network, which establishes the foundational horizontal control for surveying and mapping activities across the United States. Trig stations serve as precisely positioned reference points for large-scale surveys, engineering projects, and geographic data collection. Located at coordinates 21.57915° N, 158.22387° W, this point lies within United States territory in the Pacific. Triangulation stations of this type were established to provide surveyors with accurate control points for determining positions of secondary survey marks and geographic features. Modern verification and documentation of such benchmarks remain valuable for maintaining survey infrastructure continuity, validating historical observations, and supporting contemporary positioning work. Current elevation data for this station is not recorded in available documentation. Professional surveyors and geodetic practitioners should consult the NGS database directly for complete information regarding monumentation status and any access considerations.

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