São Marcos Geodetic Marker

São Marcos 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° 14' 38.0697" N, 08° 32' 59.3469" W (40.24390825, -8.54981858). RGN identification: 1:50,000 sheet 19A, type TORRE DE IGREJA.

Altimetry: orthometric altitude at the top 117.79 m; at the base 95.36 m; ellipsoidal altitude at the top 172.48 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-19a-sao-marcos