Lonely Planet Rocky Mountains - Lonely Planet Rocky Mountains Author:Mason Florence, Andrew Dean Nystrom, Marisa Gierlich Covers: Colorado, Wyoming, Montana & Idaho. Whether you climb awesome 14ers, hike Yellowstone or kayak the Rio Grande, the Rockies will take your breath away. This guide explores every corner in every season, from steaming geysers to gold-mine ghost towns, from chic ski resorts to where the buffalo roam. After all, the West is still wild.