PARK 7 5 — NGS DR2252 — Honolulu County, US

This triangulation station is part of the National Geodetic Survey's network of control points that form the foundation of the United States' horizontal geodetic datum. Located in Honolulu County, Hawaii, this trig point serves as a reference marker for surveying, mapping, and engineering projects requiring precise horizontal positioning. Triangulation stations like this are typically monumented with concrete or brass markers and were historically observed using optical theodolites to establish connections with other control points across broader networks. The station's coordinates (21.65408°, -157.93003°) provide surveyors and cartographers with an accurate reference for local and regional work. Verification and documentation of such benchmark stations remains valuable for maintaining geodetic infrastructure integrity, supporting infrastructure projects, and validating coordinate transformations. These points continue to serve the surveying and mapping communities despite modern positioning technologies.

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