{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "", "description": "All features have been included from the 250K data capture. Vertical Obstruction - Prominent man-made features of a permanent nature that either have landmark value, are useful for navigation or may constitute a danger to aircraft. Such features will have a height above the local terrain. (Source - http://www.ga.gov.au/mapspecs/topographic/v6/appendixA_files/Culture.html ) Activated at scales larger than approximately 1:300,000.", "summary": "", "title": "TOPO250K_Vertical_Obstructions", "tags": [], "type": "", "typeKeywords": [], "thumbnail": "", "url": "", "minScale": 0, "maxScale": 0, "spatialReference": "", "accessInformation": "© Commonwealth of Australia (Geoscience Australia) 2016. Creative Commons Attribution 4.0 International Licence.", "licenseInfo": "" }