Just as visitors have their first chance today to venture into the interior of Yellowstone National Park by auto this year, the Montana towns of West Yellowstone and Gardiner are planning a series of Earth Day events for the weekend. Starting at 8 a.m. today, autos may drive from Yellowstone's north and west entrances to Old Faithful, Canyon, and Norris. Entry into Yellowstone is free starting Saturday and continuing through April 29 as part of National Park Week. Entrance to all national parks in the country is free during the week. Continue Reading →