[tom the eldest]

200.000 dwarves?really?i thought the dwarves has much smaller population.if they did have a population that big however,the soldiers probably only one fourth of the number.the mean around 50.000.and that was too big even for a blarog.i think that the balrog ambush the dwarves,and when there number are low enough,he quickly make an assault on the main halls,defeating the remaining soldiers.as for the dwarves dont recognize the balrog,it must have been using its shapeshofting abilities,like turning into just a shadowy figures or something else.