Explore Yellowstone’s world through many different word lists themes, featuring: • Geysers & Geological Features – from rhyolite cliffs to bubbling pools and hot springs, all of the unique features of the world’s first national park • Mountains & Waterfalls – the rugged mounts and peaks and pristine rivers and streams that define Yellowstone National Park • Wildlife & Birds – wolves, grizzlies, elk, marmots, songbirds, and many more residents of the stunning high plateaus • Wildflowers & Trees – Yellowstone’s spectacular botanical diversity, from valley wildflowers to towering conifers and shimmering aspen groves • Butterflies & Other Creatures – delicate pollinators and hidden forest inhabitants including wolverine, harlequin ducks and tiger swallowtails • Native American Tribes & Historical Figures – the leaders and characters who influenced the park's creation, history and legacy