Yellowstone National Park's nearly 3,500 square miles seep slightly across state borders into Montana and Idaho, but its major attractions are contained in the northwest corner of Wyoming.

Yellowstone National Park will close most of its roads to vehicles ... Park visitors can also check the park’s live road map for up-to-date conditions or sign up for road alerts by texting ...

The best way to get around Yellowstone National Park is by car ... so you'll want to use an official Yellowstone map (available online or at the park's five visitor centers) or specific GPS ...