Dona Maria Geodetic Marker

Portel (Portugal) Geodetic Marker

Key Facts

  • Source: RGN
  • Coordinates: 38.23022192, -7.55332769
  • RGN sheet: 40D
  • Marker type: BOLEMBREANO
  • Top altitude: 256.22 m
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Dona Maria 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: 38° 13' 48.7989" N, 07° 33' 11.9797" W (38.23022192, -7.55332769). RGN identification: 1:50,000 sheet 40D, type BOLEMBREANO. Altimetry: orthometric altitude at the top 256.22 m; at the base 254.2 m; ellipsoidal altitude at the top 311.37 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-40d-dona-maria

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