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: 38° 39' 33.9312" N, 08° 59' 16.2605" W (38.65942533, -8.98785014). RGN identification: 1:50,000 sheet 34D, type PILAR TRONCO-CÓNICO S/ DEPÓSITO.

Altimetry: orthometric altitude at the top 65.39 m; at the base 37.58 m; ellipsoidal altitude at the top 118.57 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-34d-sao-sebastiao