Logan Imlach has been filmed navigating staircases, pulling offimpressive jumps and even throwing himself out of the building'swindow.It helps that the winter sports fan lives in Alaska, where itsnows so much that even abandoned buildings can present a temptingtarget for the skilled skier.The five-floor block which Logan can beseen skiing through is covered with snow on the outside, and itsinterior staircases have enough powder to allow him to descend them.