Brown it appeared, dimly, from afar through the mist, resembling a mountain.

This line paints a picture of something brown appearing faintly in the distance. Imagine looking through a haze or mist, and you see a brown shape that's not quite clear. It's so large and indistinct that it resembles a mountain emerging from the fog. It evokes a sense of mystery and vastness, where the true identity of the object is obscured by distance and atmospheric conditions, leaving you to wonder what grand form lies hidden within the mist.