São Sebastião Geodetic Marker

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° 43' 54.8292" N, 08° 08' 42.3345" W (37.73189700, -8.14509292). RGN identification: 1:50,000 sheet 45B, order 2, type BOLEMBREANO S/ IGREJA.

Altimetry: orthometric altitude at the top 274.34 m; at the base 266.59 m; ellipsoidal altitude at the top 329.11 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-45b-sao-sebastiao