Compressed weed is pretty rare and is usually better quality than a lot of the hash available. It doesn't really have a name. The hash is old and low grade these days, it also often has stuff mixed in it that ruins the taste.
The latest scene is Far Eastern gangs renting out big houses and turning them into huge grow ops. The weed is ok but harvested early and cured quickly. They use huge amounts of power so they are rumbled pretty quick but there's usually some of this available.
I'll try to find you a link as they are pretty wild setups. They pay a minder to look after things and he usually has to sleep in the hall cos all the rooms are full.