Alvalade Geodetic Marker

Alvalade 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° 56' 8.4169" N, 08° 23' 29.8029" W (37.93567136, -8.39161192). RGN identification: 1:50,000 sheet 42D, type PILAR CILINDRICO S/ BASE CILINDRICA S/ DEPÓSITO.

Altimetry: orthometric altitude at the top 91.88 m; at the base 75.96 m; ellipsoidal altitude at the top 146.13 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-42d-alvalade