Intertwined colour lines: a fascination

I find myself strangely fascinated by coloured lines intertwined together, especially if it is a pattern based on something man made or familiar to me.

This is a hand drawn colour line copy of a 1914 clearing house railway junction diagram of the area around clapham junction (the big confusing area over on the left). If you want to you can compare it to the original over here on wikipedia.

Maybe I have discovered a whole new art form with which you can experiment with on any map or satelitte photgraphy, just drawing designs. Today the web tommorrow Tate Britain.