"The city is in a valley between these mountain ranges,” Sark explained. Lars stared in awe at the sight, which reminded him of the alps he had seen as an adolescent back on Earth, with one notable exception. Beneath the thick, undulating layers of snow that covered the valley, was what appeared to be a base of glowing embers. The deep rose and amber hues that glowed through the top coat of snowfall flickered unpredictably as light would from a dying fire."