This is the research of Proffesor Mando Arndon proffesor and secret researcher.
Notes
Dunwarren
Cult of Urdlen
I found a hidden trapdoor wich led me to a place it is evident a urdlen cult was at some point active be it during the time of Dunwarren or be it during the time of sanctary. Their are only 6 holes and an alter clearly indicating this cult of urdlen wasnt active or as powerful as some might think. Unless this was 1 of many sacrificaial places. Evidence would suggest that the cult of urdlen has or had no connection. with the chosen considering how hidden the sacrificial chamber it is it clearly was a minimal ammount of the svirfneblin population. The choen are roaving ammount unless of course of the chosen started as a small populatin wich opens up 2 theorys.
1 the chosen where a small cult of urdlen then through infection they infected the majority of the population and crippled the svirfneblin and then the chosen for over hundreds of years began breeding like rats to have the large numbers they have today.
However they lost touch with urdlen and instead worshiped an entity known as te appetite. wich raises the question where the lycanthrope disease came from.
2 The Cult of Urdlen was acive but quickly disolved.
3 This cult of Urdlen was active within Sanctuary and has othing to do with Dunwarren.
Animatrons
1 Created to resist mind spells. For what purpose? The svirfneblin feared the illithid so the svirfneblin made animatrons to resist and be immune to mental powers of the illlithid. I believe their purpose was either secuirity of something. or its purpose was to combat illithid. Knowing the cowardly nature of Svirfneblin its likely they perfered animatrons t do the fighting instead of them.
2 Animatrons for some reason are battling the chosen. (possibly a war between svirfneblin and chosen so the animatrons had an order to slay all were rats. or non svirfneblin.) If my calculations are right the animatrons are loosing this war.
3 No evidence suggests spirits or necromancy are used to make these.
4 Studying some ancient pictures its possible the machine was originally invented for the sole purpose of gathering Gems not battling at all.
5 Further evidence suggests Animatrons where also made to store objects and information and kill thievies.
Chosen.
1 Lycanthrope Svirfneblin.
2 Absoloutly barbaric with utter disreguard for tactics strategy or compassion Ive seen these creatures cast fireballs and blow up their own men just to try to kill us.
3 Wizards possibly leaders????????????
4 Worship an entity known as the appetite its what keeps them unified if I where to study what the appetite is and kill it then........The chose would kill and eachother.
The Svirfneblin of Dunwaren.
1 a Suite of Svirfneblin plate I saw was enhanted against Lycan thrope animatrons undead and elves (in other words drow to) Its possible svirfneblin where use to fighting these things so its possible Drow definetly raided the svirfneblin.
2 The Svirfneblin where very warlike unlike most. (Or is it possbly just the chosen?)
3 The Svirfneblin where having some kind of war with the chosen to deny that is utter foolish.
4 a small number of them worshiped Urdlen. (still a theory.)
5 Svirfneblin angered or worshiped the apptite???????????
6 They had local authorties.
7 Possibility a substance known as AX9 Can drive people crazy and help power animatrons. AX9 Turn people to were rats?