Navigating slopes while skiing requires a great deal of skill and practice. Skiing is a popular winter sport that involves sliding down a snow-covered slope on skis, which are long, flat pieces of wood or plastic that are attached to the feet. Skiers must be able to control their speed and direction while navigating the slopes, which can be difficult due to the terrain and weather conditions. The term 'SKI' is used to describe this activity, and it is also the answer to the crossword puzzle clue.