Duna 3 Geodetic Marker

Geodetic Marker

Key Facts

  • Source: RGN
  • Coordinates: 40.26840761, -8.83098683
  • RGN sheet: 19A
  • Marker type: BOLEMBREANO
  • Top altitude: 48.23 m
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Duna 3 Geodetic Marker is a point in the Portuguese National Geodetic Network (RGN), the reference network used for mapping, surveying and geographic measurement in Portugal.

Coordinates: 40° 16' 6.2674" N, 08° 49' 51.5526" W (40.26840761, -8.83098683). RGN identification: 1:50,000 sheet 19A, order 2, type BOLEMBREANO.

Altimetry: orthometric altitude at the top 48.23 m; at the base 45.01 m; ellipsoidal altitude at the top 102.03 m.

This record is based on official RGN coordinate data and is useful for understanding the landscape, planning map work or identifying a precise geographic reference point. Local access conditions can vary, so check the terrain before visiting.

RGN source ID: rgn-19a-duna-3

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