Contour Lines vs. Reality. As reliable as a topographic map might be, it can’t reveal every detail of the terrain. A 20-foot-high cliff or a 30-foot deep ditch could exist between two 40-foot ...

SketchUp Tip: Creating 3D contour lines for do-it-yourself topo maps. August 24, 2012. Here’s a great little SketchUp video tutorial from the folks at concept3D, ...

Apple appears to be gearing up to add topographic maps to the Apple Maps apps in iOS 18, macOS 15, and visionOS 2, according to code reviewed by MacRumors.. First introduced with watchOS 10 ...