Twenty-five miles south of Big Timber on Highway 298, a visitor will find an area of unsurpassed beauty. The Main Boulder River, an "A-1" trout stream, tumbles out of the mountains to meander gently through meadows filled with wildlife. When it reaches Natural Bridge it becomes a wild surge of water as it drops 100 feet over the limestone bedrock into a gorge carved out by the river and shaken by earthquakes. In the spring, the water fills the riverbed and two smaller falls can be seen under the main fall. Later in the season the water goes underground and spills out of the lower openings. Information signs are posted along the paved pathways that explain the geological events that helped shape the area, fossils that you can see in the rock along the path, and wildlife of the area. Stand on a large, wooden bridge and watch the tiny Dipper bird hunt for food in the swift water rushing below you. From there, follow the well-maintained dirt trail leading to an observation point directly across from the falls. You can continue your hike up the Green Mountain Trail to enjoy the view of the whole Boulder Valley. Look for limber pine, lodge pole pine, Douglas fir and wildflowers galore. Besides the smaller animals and birds. You may be lucky enough to see deer, e1k or even bear along the way. There are toilets and picnic tables, but no water. Take a picnic lunch and ENJOY