Dry Creek Petrified Forest
Johnson County, Wyoming

After a visitor to Buffalo has enjoyed a taste of the 19th century old west, some may wish to take a 10-mile trip east of town into the prehistoric age with a visit to the Dry Creek Petrified Tree Environment Education area. Petrified wood was formed when silicate minerals replaced the cell structure. Sediment, usually volcanic ash, buried the stems, trunks or roots of woody plants so rapidly that they do not decay. Water dissolves silicate minerals as it seeps through the sediment and eventually it penetrates the buried wood. Compaction expels the water from the plant tissues and the deposited minerals harden to preserve minute details of the plants structure. With all the livestock grazing the green grass along the way, it's hard to believe that millions of years ago this land resembled southern Georgia's Okefenokee Swamp.

Along County Highway 204, popularly known and marked as the TW Road, red scoria topped hills dot the landscape. After 8.5 miles, the graveled road intersects with the paved Tipperary Road. Take a left turn onto Tipperary and travel 1.5 miles to a major curve in the road. To the right in a non-accessible area a lone petrified tree stands on the side of a scoria topped hill. It takes a while to focus in, but the perfectly formed petrified tree contrasts royally with the hillside. When the speedometer reads 10 miles, look to the right for a sign that denotes the Dry Creek center, an outstanding natural area. As with all land in this area visitors are encouraged to close the gate they open to the center. The road winds through sagebrush until one reaches another sign that reads, "As you travel this loop, you will read about the formation of petrified trees, scoria and the Big Horn Mountains. The tour area dates back to 60 million years when the swamp formed metasequoia trees. After taking the loop tour and seeing the forest in its serene setting, retrace the highway back to the intersection of the Tipperary and TW roads. It is possible to remain on the Tipperary road rather than turning left onto TW road for the return trip to Buffalo. This return trip is only a mile or so longer and intersects with Interstate-90 heading west toward Buffalo. Wyoming has other petrified forests, including Amethyst Mountain in Yellowstone National Park, where there are 15 buried forests. Yellowstone also boasts a fossil sequoia stump with a diameter of 15 feet. Petrified wood is also found in central Wyoming's Shirley Basin near Casper. For more information and directions, inquire at the Bureau of Land Management office in Buffalo.


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