CACTUS — NGS TU1576

This triangulation station is part of the National Geodetic Survey's trigonometric network, which establishes the foundational control framework for surveying and mapping throughout the United States. Located at coordinates 21.56356°N, 158.24529°W in Hawaii, this trig point serves as a horizontal reference for regional geodetic surveys and property boundary determinations. Trigonometric stations of this type were historically established through careful angular measurements and distance observations to create networks of known positions. The NGS maintains records of such benchmarks to support surveying professionals, cartographers, and infrastructure development projects. Verification and documentation of existing control points remain essential for ensuring accuracy in modern surveying work and for validating legacy survey data. The elevation at this location was not recorded in available documentation.

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