The helmet’s sensors activated, Lucky neither knew nor cared which ones. Probably sonar, though she couldn’t tell for sure. After a second, the ice began to glow different colors. The key on the corner of her screen indicated the darkest patches corresponded to the thickest ice. So, she hovered over to a patch that was bright orange, and flew straight at it with all the force she had. She ended her dive in a kick. The whole thing rumbled, a deep moan that echoed through the land all around, and a huge chunk came ripping free. Several others broke off in a cascade as well, getting dangerously close to where the princess had landed.