7929 Gunbar 1:100k Topographic Map New South Wales Published by National Geographic in

Published by National Geographic in December 1988 (the Society’s centennial)

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Ready to run Barrow Island to Onslow

7929 Gunbar 1:100k Topographic Map New South Wales Published by National Geographic inAt a scale of 1: 100,000, 1cm on the map represents 1km on the ground. Each map covers a minimum area of 0. 5 degrees longitude by 0. 5 degrees latitude or about 54 kilometres by 54 kilometres. The contour interval is 20 metres. Many maps are supplemented by hill shading. Topographic maps show contours, spot elevations, streams, roads, buildings, place names, vegetation and administrative boundaries. They are used by emergency services, environmental