Serra de Opa Geodetic Marker
Key Facts
- Source: RGN
- Coordinates: 40.28604017, -7.21259372
- RGN sheet: 21A
- Marker type: BOLEMBREANO
- Top altitude: 869.07 m
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Serra de Opa 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° 17' 9.7446" N, 07° 12' 45.3374" W (40.28604017, -7.21259372). RGN identification: 1:50,000 sheet 21A, type BOLEMBREANO. Altimetry: orthometric altitude at the top 869.07 m; at the base 866.57 m; ellipsoidal altitude at the top 924.95 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-serra-de-opa
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