Lucky grinned at her. “Don’t follow me for a second, just watch. ” She lifted into the air, finding it was easy for her despite her day of flying. Considering all the rests and how slow they’d gone, she had far more energy left than last time. Lucky unhooked the helmet from where she’d kept it on her saddlebags and settled it on her head. “Headlights.” They came on, and she quickly looked away from the princess, pointing them instead at the icy field. There was no sign of the opening she and Lightning Dust had made last time they were here. It looked like an identical, unbroken sheet. Thin enough that it might be broken through, if she wasn’t careful. “Scan the ice. I want an overlay of thickness,” she instructed.