Rose returned quickly enough, hastening to catch up to the Doctor as he made his way along the frozen water that now served as their ground. It was thick, no cracks, which was understandable if one considered the notion that the entire sea itself had frozen to an incredible depth. Doubtlessly there were still pockets of turbulent water raging in the bottom of the seas, where natural geothermal energy had kept them from freezing, but those were out of sight. There was just the ice, the beautiful crystal waves, and the dancing auras in the sky. 

Looking over, he had to admit that Rose certainly looked cozy, while cold bit at his own exposed extremities. It was uncomfortable, but that was being alive, and where was the fun in being comfortable. He knew he wouldn't get frostbite or something silly like that, so he would be fine. The ground was relatively firm beneath his feet, the way it froze preventing any sort of flat, slick surface from arising that could toss him on his behind. His mind was trying to ignore what had happened before, to just focus on the beauty in front of him and the things he had yet to see, but it was hard going at that. You think it'd be easy for a being hundreds of years old to forget stuff, but sadly he didn't get off that easy. Lords of time and all, he could remember everything.

He looked over as Rose mentioned figure skating then. "Well, if it were undisturbed then there wouldn't be any atmosphere cause it would all have frozen. There's people somewhere, for the tourist industry I suppose. We've just got to find them," he replied, wondering just where those people would be,.

Fortunately, it seemed that the people would find them, rather than the other way around. It wasn't obvious at first, shining points in the distance slowly growing closer and closer, but soon they would hear the sound of revving engines, snowmobiles, headed towards them at a decent clip. They resolved into focus, a trio of the snowmobiles headed in their general direction, though it seemed that they hadn't spotted Rose and the Doctor yet.

"See, what did I tell you," he commented triumphantly. "People."