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: 37° 42' 8.3922" N, 07° 55' 43.9133" W (37.70233117, -7.92886481). RGN identification: 1:50,000 sheet 46A, type PILAR CILINDRICO S/ BASE CILINDRICA.

Altimetry: orthometric altitude at the top 210.17 m; at the base 207.37 m; ellipsoidal altitude at the top 264.79 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-46a-sao-marcos