Pedras Alvas Geodetic Marker

Guimarães (Portugal) Geodetic Marker

Key Facts

  • Source: RGN
  • Coordinates: 41.46093636, -8.23532783
  • RGN sheet: 09B
  • Marker type: PILAR CILINDRICO S/ BASE CILINDRICA
  • Top altitude: 509.96 m
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Pedras Alvas 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° 27' 39.3709" N, 08° 14' 7.1802" W (41.46093636, -8.23532783). RGN identification: 1:50,000 sheet 09B, order 3, type PILAR CILINDRICO S/ BASE CILINDRICA.

Altimetry: orthometric altitude at the top 509.96 m; ellipsoidal altitude at the top 565.48 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-09b-pedras-alvas

Sobre Guimarães

Birthplace of Portugal, with a World Heritage historic center. The castle and Palace of the Dukes evoke Portugal's origins.

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