Some of the Himalayan roads remain closed during winter due to thick snow cover. However, some of these are very popular among tourists. For instance, Manali-Leh, Srinagar-Leh, Manali-Keylong and Kaza-Keylong. Next time, when you plan to explore any of these routes, check the road status at the website of Lahaul Spiti and Leh districts, as the respective state governments regularly update the status of these roads. And, drive safely.