Pedras Negras Geodetic Marker
Key Facts
- Source: RGN
- Coordinates: 39.17182419, -9.19761978
- RGN sheet: 30B
- Marker type: BOLEMBREANO
- Top altitude: 114.86 m
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In Torres Vedras
Pedras Negras 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: 39° 10' 18.5671" N, 09° 11' 51.4312" W (39.17182419, -9.19761978). RGN identification: 1:50,000 sheet 30B, type BOLEMBREANO. Altimetry: orthometric altitude at the top 114.86 m; at the base 112.32 m; ellipsoidal altitude at the top 168.79 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-30b-pedras-negras
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