The halls of the goblin king were underground, carved exquisitely in to a mountain that held vast amounts of metallic ore. This was a prime location that they had battled the dwarves for in the past, and they had won by systematically poisoning the dwarven army through a variety of ways. Goblins were good craftsmen, very dexterous and shared just as good a talent in engineering as the gnomes. Except of course what they did was more to cause destructions by making things go Boom! But beyond engineering they had alchemy, of course every goblin that becomes an alchemist ended up focusing on poisons and explosives as their races seemed to alter the class itself and what they could make from it.