São Mamede Geodetic Marker

São Mamede 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: 41° 11' 33.6958" N, 08° 36' 37.1962" W (41.19269328, -8.61033228). RGN identification: 1:50,000 sheet 09C, type PILAR S/ CONSTRUÇÃO.

Altimetry: orthometric altitude at the top 117.46 m; at the base 102.2 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-09c-sao-mamede