Quest: When Good Dragons Go Bad

When meeting the Vath Deftarm, he says the following:

Vath Deftarm: As she told it, these furry creatures make their home in the Sea of Clouds, where they now toil day and night to rebuild a great and ancient plaza, with the aid of dragons and men. Surely such an industrious tribe would have much in common with myself and my compatriots. Very much indeed!

Later, the says:

Vath Deftarm: Master and student, striking out on adventure once more─my heart pounds in anticipation! Let us make for the Churning Mists without delay. I shall race you there!


Are the Churning Mists part of the Sea of Clouds?
I thought they belong to Dravania.

Thanks in advance!