São João de Areias Geodetic Marker

Geodetic Marker

Key Facts

  • Source: RGN
  • Coordinates: 40.38650461, -8.07142331
  • RGN sheet: 20A
  • Marker type: CÚPULA DE IGREJA
  • Top altitude: 254.71 m
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São João de Areias 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° 23' 11.4166" N, 08° 04' 17.1239" W (40.38650461, -8.07142331). RGN identification: 1:50,000 sheet 20A, type CÚPULA DE IGREJA.

Altimetry: orthometric altitude at the top 254.71 m; at the base 236.46 m; ellipsoidal altitude at the top 309.93 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-20a-sao-joao-de-areias

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