Gralheira Geodetic Marker

Geodetic Marker

Key Facts

  • Source: RGN
  • Coordinates: 40.45028581, -8.35572011
  • RGN sheet: 16D
  • Marker type: BOLEMBREANO
  • Top altitude: 371.03 m
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Gralheira 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° 27' 1.0289" N, 08° 21' 20.5924" W (40.45028581, -8.35572011). RGN identification: 1:50,000 sheet 16D, type BOLEMBREANO.

Altimetry: orthometric altitude at the top 371.03 m; at the base 368 m; ellipsoidal altitude at the top 426.28 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-16d-gralheira

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