Terra Tenebrosa. Ex members of an awesome swedish hardcore band called Breach. Instrumental heavy as fuck post-metal.
On a post-metal related note, also check out Light Bearer. Ex members of Fall Of Efrafa and featuring one of my friends from a local band called The Nepalese Temple Ball, another band you should check out who play monumental, spaced out, sludge/stoner.
For anyone who likes powerviolence, check out Witch Cult. Another local act who've recently released a self titled vinyl and are set to support Napalm Death in Weymouth in December.