What was the name of that snark map?

[PunishedVatti]

I remember there was a map that showed snarks running over a log, there was more to it but I forgot all about it until now. Does anyone know where I can download this map again and why was it made?

[Витой]

The map can be found in Particle Simulation Benchmark.

Alternatively you can play it in Aftermath mod, I think it's even in more fixed state than the original.