São Sebastião Geodetic Marker
Key Facts
- Source: RGN
- Coordinates: 37.55905950, -7.76403314
- RGN sheet: 46D
- Marker type: BOLEMBREANO
- Top altitude: 218.79 m
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In Mértola
São Sebastião 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: 37° 33' 32.6142" N, 07° 45' 50.5193" W (37.55905950, -7.76403314). RGN identification: 1:50,000 sheet 46D, type BOLEMBREANO. Altimetry: orthometric altitude at the top 218.79 m; at the base 215.97 m; ellipsoidal altitude at the top 273.4 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-46d-sao-sebastiao
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