The term 'suitable for sledding' can be described by two crossword solutions: 'HILLY' and 'SNOWY'. HILLY terrain is characterized by having many hills and slopes, which makes it an ideal place for sledding. SNOWY conditions are also necessary for sledding, as the snow provides a cushion for the sledder and allows them to slide down the hill. Therefore, a suitable place for sledding would be a HILLY area with plenty of snow.