How To Create a Seamless Topographic Map Pattern

This post was originally published in 2015 The tips and techniques explained may be outdated. I’ve posted articles about topographic maps before on my blog, namely my contour map effect Illustrator tutorial and my free pack of topographic map patterns. My first tutorial used Illustrator’s Blend tool to draw a series of concentric lines. It worked pretty well, but I went on to develop a technique t