MARKED TREE 1 — NGS RD2884 — Portland, US

This triangulation (trig) station is part of the National Geodetic Survey's network, which establishes the primary control framework for surveying and mapping throughout the United States. Located near Portland, Oregon at coordinates 45.60111° N, 122.62414° W, this point serves as a horizontal control reference for professional surveyors and mapping projects in the region. Triangulation stations of this type were historically established to provide accurate positional data across large areas. Such points remain valuable for verifying survey networks, conducting high-precision geodetic work, and ensuring consistency in local and regional coordinate systems. Verification and documentation of existing benchmarks and trig stations support the maintenance of the nation's geodetic infrastructure. Surveyors, engineers, and GIS professionals rely on these reference points for accurate coordinate determination. Confirming the continued existence and accessibility of such monuments assists in preserving the geometric foundation of surveying practice.

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