Sobreiros Geodetic Marker

Alenquer (Portugal) Geodetic Marker

Key Facts

  • Source: RGN
  • Coordinates: 39.07278442, -9.09433575
  • RGN sheet: 30D
  • Marker type: PILAR S/ MOINHO
  • Top altitude: 220.43 m
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Sobreiros 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° 04' 22.0239" N, 09° 05' 39.6087" W (39.07278442, -9.09433575). RGN identification: 1:50,000 sheet 30D, type PILAR S/ MOINHO. Altimetry: orthometric altitude at the top 220.43 m; at the base 213.24 m; ellipsoidal altitude at the top 274.38 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-30d-sobreiros

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