I've been trying to export some contours generated for a 30km square area, from arcMap 10.3 to both AutoCAD and Civil3D, with no success in either DWG or DXF format.
I have followed these, and similar instructions: http://maps.library.utoronto.ca/docs/Exporting_Contours_from_ArcMap_to_AutoCAD.pdf
I have generated the contours using spatial analyst, with the extension on, and everything works well except that the X-axis data is .000006% of the size of the actual scaled area. I've tried adjusting the projection settings in Civil3D, to match those in ArcGIS, to no avail
I've attached a screenshot of what happens due to the mismatched scaling, so perhaps someone here might have a tip?