And the next while can be spent spreading the word among and arranging dragons. They have their pick of deserted and mostly deserted lands, though dragons generally seem to prefer mountainous regions. Finding somewhere magical enough and not tainted is hard (there's a ruined mountain island chain in the western ocean, the mighty skeleton of Ancalagon draped over it, where the sun doesn't shine and the land still reeks of corruption), though anywhere Ellisaria modifies seems to relevantly count as 'magical.' Finding somewhere in flying range of game is easier, as is a blended approach. Their flight grows, even if some dragons have trouble getting with the program.
Brisingr especially grows quickly, staying thin but soon surpassing Ellisaria in length, her fires getting hotter and her hide tougher and her Song stronger. She discovers she really really likes bathing in magma.
The dwarves fix up and resettle the Lonely Mountain - Durin's Line, almost entirely - and Thorin calls a great moot of all seven dwarven Houses to retake, resettle, and repair Khazad-dûm. Men, too, come from the eastern and southern parts of the world as the project gets into motion, sensing a trade opportunity like none other and settling in the lands outside the western gate. The region flourishes, and the mountains are all well cared for.
Of course, the long Ages of the world contain more than their share of drama, and few things remain idyllic for long...