Yellowstone is HUGE. Most people who visit stay on route 191, where the most famous parts of the park such as Grand Prismatic hot springs, Old Faithful, and the west thumb of Yellowstone Lake are. Some also drive up 89 and east on the connector road to the “grand canyon” of Yellowstone. This forms the central, and most popular, part of the park which is easily accessible from the town of West Yellowstone.
Beautiful, I want to go!!!