Alaska's only winter adventure show, Oxygen and Octane, will take place this weekend in Anchorage, Alaska. The fourth annual Oxygen and Octane Expo at the Dena'ina Convention Center on Friday, Oct. 7 through Sunday, Oct. 9. Admission is free, there is ample parking nearby and a load of door prizes to give away at the Expo.A record turnout of vendors and visitors is expected this year.Alaska's premier expo facility will be filled to the limits with vendors, outdoor guides, rental and vacation properties, machines, skis and gear, and fun for the entire family.The Oxygen & Octane Expo is endorsed by the Alaska State Snowmobile Association and sponsored in part by the National Guard. The ASSA will also host a snowmachine and gear swap during the Expo.Unofficially dubbed the "Big O" show, the inaugural Expo in 2008 was a great success, hosting an estimated 17,000 visitors and 115 vendors. The 2008 Big O show marked the official opening of the new Dena'ina Convention Center. This event was initiated to fill a need for a comprehensive, winter-focused adventure show. They realized an opportunity growing, as has winter recreation, to showcase the companies, products and big toys that make Alaska winters so irresistibly exciting, as well as to inform the public of how to better enjoy winter in Alaska.In addition to snowmachine dealers from the Big 4, trucks and autos, trailers, ski apparel and equipment, and clearance items, the Big O has some new sights, fun and foods in store. The Oxygen & Octane Expo will have door prizes and raffles that include ski passes to Alyeska Resort, Hilltop and Arctic Valley, snowcat skiing with Chugach Powder Guides, chances to enter to win a snowmachine, riding gear and overnight stays at fine lodges and much, much more. For more information on the Oxygen & Octane Expo, browse www.oxygenandoctane.com or call Alaska Adventure Media, (907) 677-2900.