A modified version of the Flagstone pattern is the Flagtech texture. Carved lines and circles create bizarre motives like alien space ships, electrical circuits and unusual architecture.

Each new Octave adds more, smaller carvings to the pattern. Control the valence of the smaller octaves with the Persistence value. Increase the Resolution parameter to reduce the overall size of the pattern.

Operation of the Amplify value manipulates the contrast of the texture. Exceeding values are bounced, resulting in a more chaotic pattern. Try it out. 

Tip: Use the Noise/Erosion function with the Shelly preset to make the metallic flagtech pattern look aged.