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Name: Martberg topographic map, elevation, terrain.
Location: Martberg, Niederkassel, Rhein-Sieg-Kreis, Cologne Government Region, North Rhine-Westphalia, 53859, Germany (50.78149 7.05013 50.80149 7.07013)
Average elevation: 55 m
Minimum elevation: 45 m
Maximum elevation: 61 m