Ferrolho Geodetic Marker

Geodetic Marker

Key Facts

  • Source: RGN
  • Coordinates: 40.35211833, -7.30511686
  • RGN sheet: 21A
  • Marker type: BOLEMBREANO
  • Top altitude: 617.75 m
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Ferrolho 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° 21' 7.626" N, 07° 18' 18.4207" W (40.35211833, -7.30511686). RGN identification: 1:50,000 sheet 21A, type BOLEMBREANO.

Altimetry: orthometric altitude at the top 617.75 m; at the base 615.35 m; ellipsoidal altitude at the top 673.61 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-21a-ferrolho

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