What happens when you scale a glacier? Let's see: You go blind from all the unfiltered sunlight glaring off the ice. Your patience and endurance are pushed to the precipice. Your muscles quiver and your blood runs cold. And then, as hypothermia sinks into your marrow, the eternal plane of whiteness all around you becomes disorienting, upending your sense of equilibrium until you wind up lost, prostrate and gushing crystal tears. All that's missing is an ideal soundtrack. Enter Across Tundras. The group's onslaught of Pleistocene pulverization is a polarizing experience. But love it or hate it, the trio sculpts one of the most singular and intense sounds Denver has ever heard. Recently picked up by the renowned avant-metal imprint Crucial Blast, Across Tundras is escalating its inexorable creep across the continent. Better retread those boots.