Natural Bridge is a rhyolite arch cut by Bridge Creek near Yellowstone Lake. The approach is an easy forest walk that follows a short trail and service road before a steeper spur climbs toward the bridge and the creek ravine.
The route is a quieter Yellowstone stop than the geyser basins and canyon viewpoints, but it is still a rewarding short hike. Seasonal closures are possible when bears feed on spawning trout in Bridge Creek.