Act as a seasoned travel planner with 10+ years of experience in adventure tourism. Provide a detailed list of the top 5 snowmobiling destinations worldwide, including [COUNTRY], [REGION], and [BEST TIME TO VISIT]. For each destination, highlight key features such as terrain difficulty, scenic routes, rental availability, and local accommodations. Also, include safety tips, must-pack gear, and any permits or regulations travelers should know. Tailor recommendations for [BEGINNER/INTERMEDIATE/EXPERT] riders and suggest nearby attractions for non-riders. Format the response in a visually appealing way with bullet points and brief descriptions.