The park shuttle returns to full time use so you should plan on using the free shuttle bus to access the Zion Canyon Scenic Drive. The Human History Museum will usually open in spring, but for limited hours so check current listings. South Campground opens during this time period. In wet years, the Narrows are likely to be closed. March is spring break for many people across the country who want to take vacation to Zion. We see a dramatic increase in visitation to Zion Canyon in March, which sees almost three times as many visitors as in February. Typically, park shuttle buses will be used only during the holidays, like the week between Christmas and New Year's Day and on Presidents' Day weekend. Access to the upper part of the Kolob Terrace Road, including Lava Point closes. Access to Kolob Canyons regularly closes in inclement weather. Driving conditions can be very poor during a storm, but roads are usually plowed quickly after. South Campground and part of Watchman Campground closes. The Human History Museum remains closed and the park film can be seen at the Zion Canyon Visitor Center, which is open daily all winter.