Alfena Geodetic Marker

Alfena (Portugal) Geodetic Marker

Key Facts

  • Source: RGN
  • Coordinates: 41.23657378, -8.52208242
  • RGN sheet: 09C
  • Marker type: BOLEMBREANO
  • Top altitude: 172.6 m
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Alfena 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: 41° 14' 11.6656" N, 08° 31' 19.4967" W (41.23657378, -8.52208242). RGN identification: 1:50,000 sheet 09C, type BOLEMBREANO.

Altimetry: orthometric altitude at the top 172.6 m; at the base 170.62 m; ellipsoidal altitude at the top 227.77 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-09c-alfena

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