Silha Velha Geodetic Marker
Key Facts
- Source: RGN
- Coordinates: 38.52593900, -8.82557300
- RGN sheet: 39A
- Marker type: BOLEMBREANO
- Top altitude: 31.15 m
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Silha Velha 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: 38° 31' 33.3804" N, 08° 49' 32.0628" W (38.52593900, -8.82557300). RGN identification: 1:50,000 sheet 39A, order 2, type BOLEMBREANO. Altimetry: orthometric altitude at the top 31.15 m; at the base 28.15 m; ellipsoidal altitude at the top 84.58 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-39a-silha-velha
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