That reaction is definitely familiar, and Korrin's aware that if their positions were reversed, it'd all sound incredible to her, too. Probably. So, she just takes it in stride, speaking calmly in response.

"You're in the continent of Thedas; more specifically, the Empire of Orlais. This region is known as Emprise du Lion and the town -what remains of it- is Sahrnia. And the rift isn't a cloud, it's a tear in the Veil; what separates the waking world from the Fade. The Fade is a land of spirits and demons, where people visit when they sleep...and where they pass through when they die. Someone caused an explosion that shredded the Veil; that rift is but one of many."