Yellowstone will open access on December 15 to snowmobilers for the season.The Park Service has extended last year's One-Year-Rule for the 2012-2013 Winter Season. The rule allows 318 commercially guided Best Available Technology (BAT) snowmobiles and 78 commercially guided snow-coaches. The proposed extension will also continue to provide access for motorized travel from the East Entrance road over Sylvan Pass. The extended one-year rule allows the same level of activity as the 2011- 2012 season. The Park Service has now determined that many issues need to be further analyzed before a new long range Winter Use Plan can be put in place for the 2013-2014 season and beyond. This additional analysis will be conducted using the current Supplemental Environmental Impact Statement (SEIS) process, which will include the winter season 2012-2013 in Yellowstone. "Please remember the fact that Yellowstone remains open to snowmobiles represents one of the most profound victories over the extreme environmental movement in our lifetime. Enjoy the victory and make your plans to come and enjoy Yellowstone this winter on a snowmobile,"said Jack Welch, Special Projects Coordinator for the BlueRibbon Coalition (BRC).