Foam Rolling/Self Massage Advice

Hi everybody, long time lurker here, so let me start off by saying thanks to all the authors and posters at T Nation - I have learned so much from you all. One of the first things I learned was that my posture was seriously messed up and I was very inflexible so I began self-myofascial release with a foam roller which led me to experiment with self-massage. Quite soon after starting I began to see these weird lines which over time began to form complex patterns.

I vaguely remember another poster writing about this ages ago but I have been unable to find the correct thread and google searches haven’t turned up anything either. Has anyone else experienced this? Does anyone know what these lines are called? My apologies if this seems totally random but I’d really like to know whats going on. Any help would be much appreciated.

I don’t know what the lines are but here as the article. You may want to contact the auther if you don’ get an answer here.

Weird lines where? On your skin? I’m confused.