Hi Prab! I´ll try to tell you some more about the so called vargaskall, others who read this - feel free to correct any errors, I´m not a 100% sure of this. Stefan W probably knows more
In a vargaskall, or vargskall, they used people (beaters in English?) to drive the wolves towards the shooters, by making loud noises. There would be a couple of temporary fences (sort of) placed like the shape of the letter V. The wolves were driven into the wide opening in the "V". They were then driven towards the narrow part of the V, where the shooters lay in waiting. Part of the lyrics in "Vargaskall" are "ringa in och rota ut", meaning "encircle and root out", which they succesfully did.
Man, I look forward to hearing the whole album, the samples sound so great