It's important to remember, the cover art for the book was drafted and then painted months before the final text of the book was established. Heck, if Whelan actually read even a rough draft of the novel when he did this, I'll be greatly surprised.
It's pretty rare for any book cover, especially on a first run, to accurately depict any actual scene from the book itself. I still remember the original Josh Kirby cover to Pratchett's The Colour of Magic which distinctly showed Twoflower having four eyes... and to be sure, when we first see Twoflower described, the term "four eyes" is used, but it doesn't take much further reading to recognize that Twoflower A)wears glasses, B)is a satire of an Asian tourist, and C) is being described by a drunk. He should not have four actual eyes in his head. But Kirby was working from a partial description on a book he had never read, and so it was an easy mistake to make.
That may be Dalinar and the Parshendi Shardbearer (I had thought it was Kaladin in the distance myself), but if you're looking for an exact representation of a scene in the book I expect you'll want to wait until they publish a second edition.