Curves, cuts, and cliffs at Cavers - high above the right-of-way the nascent snow melt atop the bluffs has frozen again overnight, giving it the look of a wax-laden candle base. Meanwhile, the ice on Superior has given way to shimmering shades of blue in the mid-morning sun, setting a dramatic scene for a long string of EB racks to navigate - CP 106 at MP 27 Nipigon Sub emerges from its first of the two bores here inching closer to its change off at Schreiber.