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Winter Use

For Yellowstone National Park, Grand Teton National Park, and the John D. Rockefeller, Jr. Memorial Parkway Yellowstone National Parks winter use: https://www.nps.gov/yell/planyourvisit/winteruse.htm Snowmobiles Meeting Best Available Technology (BAT) Requirements FONSI, 10/15/09 Winter Use Technical and Planning Documents Final Rule Winter Use, 11/20/09 Visit our winter trip planning page for more information. td>