Valongo Geodetic Marker

Nisa (Portugal) Geodetic Marker

Key Facts

  • Source: RGN
  • Coordinates: 39.49818797, -7.71799078
  • RGN sheet: 28B
  • Marker type: PILAR PRISMÁTICO S/ BASE PRISMÁTICA
  • Top altitude: 299.31 m
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Valongo 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: 39° 29' 53.4767" N, 07° 43' 4.7668" W (39.49818797, -7.71799078). RGN identification: 1:50,000 sheet 28B, type PILAR PRISMÁTICO S/ BASE PRISMÁTICA. Altimetry: orthometric altitude at the top 299.31 m; at the base 296.51 m; ellipsoidal altitude at the top 354.33 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-28b-valongo

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