R 3 — NGS TU0629 — Kapolei, US

This triangulation station is part of the National Geodetic Survey's network of control points that form the fundamental framework for surveying and mapping across the United States. Located near Kapolei on the island of Oahu, Hawaii, at coordinates 21.32717°N, 158.06193°W, this trig point serves as a reference for establishing horizontal positions in its region. Triangulation stations of this type historically provided essential vertical sightlines for surveyors conducting distance and angle measurements across the landscape. The NGS network remains valuable for verifying and documenting such reference points, as they anchor modern surveying work, mapping projects, and geodetic studies. Their continued maintenance and documentation support the accuracy and consistency of spatial data across Hawaii's surveying infrastructure.

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