Alto da Portela Geodetic Marker
Key Facts
- Source: RGN
- Coordinates: 40.54519319, -7.48856978
- RGN sheet: 17D
- Marker type: BOLEMBREANO
- Top altitude: 636.61 m
Alto da Portela 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° 32' 42.6955" N, 07° 29' 18.8512" W (40.54519319, -7.48856978). RGN identification: 1:50,000 sheet 17D, type BOLEMBREANO.
Altimetry: orthometric altitude at the top 636.61 m; at the base 634.1 m; ellipsoidal altitude at the top 692.68 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-17d-alto-da-portela
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