SKIP GLOBAL NAVIGATION CONTENT INFORMATION FOOTER NATIONAL PARK SERVICE LOGO SEARCH SITE OPEN EXPLORE PARK HOME PLAN YOUR VISIT HOURS SEASONS OPENING CLOSING DATES SEASONAL HIGHLIGHTS WINTER YELLOWSTONE FEES ACADEMIC WAIVERS CURRENT CONDITIONS CANYON AREA CONSTRUCTION AREA CLOSURES GRAND PRISMATIC SPRING GEYSER ACTIVITY SOUND RECORDING WEATHER FAQS FACTS VISITATION STATISTICS RULES REGULATIONS GOODS GAS STATIONS MEDICAL SERVICES POST OFFICES STORES GIFT SHOPS REPAIR DIRECTIONS TRANSPORTATION ROADS MAPS EATING SLEEPING LODGING CAMPING BRIDGE CAMPGROUND FISHING RV PARK GRANT VILLAGE INDIAN CREEK LEWIS LAKE MADISON MAMMOTH HOT SPRINGS NORRIS PEBBLE CREEK SLOUGH CREEK TOWER FALL RESTAURANTS TO GO VISITOR CENTERS HUTS VILLAGE VISITOR EDUCATION CENTER LAKE AREAS MUSEUMS LAKE VILLAGE WEST YELLOWSTONE VISITOR CENTER FAITHFUL WEST THUMB THINGS TO DO BACKCOUNTRY HIKING FOOD STORAGE BICYCLING SPRING FALL BOATING SKIING SNOWSHOEING SKI SNOWSHOE TRAIL GUIDES HIKING TRAILS FISHING SEASON VOLUNTEER FLY FISHING PROGRAM HORSEBACK RIDING LLAMA PACKING RANGER SNOWMOBILES WILDLIFE VIEWING GUIDED TOURS BACKPACKING BIKING PAINTING PHOTOGRAPHY TOURS SNOWCOACH SNOWMOBILE STOCK PROVIDERS CALENDAR EVENING THE ARCH PERFORMERS PARTNERS SAFETY THE YELLOWSTONE PLEDGE BEAR SAFETY BEAR CARE CAMPAIGN REDUCE RISK BEAR SPRAY UNDERSTANDING MINDSET TIPS WATCHING ROADSIDE BEARS IMPACT WHEELCHAIRS MOBILITY ACCESSIBLE WHEELCHAIR ACCESS SEGWAY PERSONAL SIMILAR VEHICLES GRAND NORRIS GEYSER BASIN TOWER VISUAL SERVICE ANIMALS NEARBY ATTRACTIONS TRANSLATED WILDLIFE SCIENCE PUBLICATIONS LEARN THE PARK STUDY SOCIAL MEDIA NEWSPAPER NEWS RELEASES PHOTOS MULTIMEDIA PHOTO GALLERY SKIES THERMAL FEATURES VEGETATION WATERFALLS SOUNDS 1610 AM AUDIO POSTCARDS TELEMETRY LIBRARY IN DEPTH MINUTE OUT IN INSIDE VIDEO LIBRARY VIRTUAL TOURS TOUR UPPER GEYSER BASIN VIDEO TOUR WEST THUMB GEYSER BASIN INTERACTIVE FEATURES WEBCAMS WEBCAM UPDATES CULTURE HISTORY TIMELINE EARLIEST HUMANS HISTORIC TRIBES EUROPEAN AMERICANS ARRIVE EXPEDITIONS BIRTH NATIONAL PARK VISITORS WORLD WAR II 1960S MODERN MANAGEMENT OBSERVATIONS LAKE HOTEL LAMAR BUFFALO RANCH FORT YELLOWSTONE ARCHIVES MUSEUM COLLECTION BLOG RESEARCH LIBRARY HISTORIAN VEHICLE COLLECTION PRESERVATION ARCHEOLOGY ETHNOGRAPHY CULTURAL LANDSCAPES NATURE GREATER YELLOWSTONE ECOSYSTEM ECOSYSTEM INFLUENCE GEOLOGY AIR QUALITY SOUNDSCAPES WATER ECOLOGY BEYOND BOUNDARIES LAND USE WILDERNESS CLIMATE CHANGE CHANGES YELLOWSTONE CLIMATE EVIDENCE GLOBAL CLIMATE CHANGE REFERENCES VOLCANO SYSTEMS YELLOWSTONE LAKE EARTHQUAKES GLACIERS SEDIMENTATION AMPHIBIANS BIRDS FISH SPECIES MAMMALS REPTILES REPORT SIGHTING RESCUING PLANTS COMMUNITIES RARE FORESTS WETLANDS WILDFLOWERS INVASIVE PLANTS NATIVE HERBARIUM FIRE FIRE FIRE ECOLOGICAL CONSEQUENCES FIRES LIFE FORMS MICROBES THERMOPHILES THE TREE OF LIFE THERMOPHILIC BACTERIA THERMOPHILIC ARCHEA EUKARYA VIRUSES IN TIME SPACE RESEARCH HISTORY OF SCIENCE IN PERMIT OFFICE WOLVES INDEX GUIDELINES SCIENTIFIC CONFERENCES BUILDING LEADING INTO THE FUTURE CONFERENCE KEYNOTE CROSSING BORDERS EDUCATION EXPEDITION CURRICULUM PARKS CLASSROOMS MATERIALS FIELD TRIPS FIELD SCHOOLS DISTANCE LEARNING KIDS YOUTH CENTENNIAL COLORING BOOK OLYMPICS ANIMAL ALPHABET ABCDE PREDICT JUNIOR MOVE OUTSIDE YOUNG SCIENTIST STAFF OFFICES CONCESSIONS YOUTH PROGRAMS PROTECTION RESOURCES LAWS POLICIES GUIDANCE YELLOWSTONE NATIONAL PARK NATIONAL PARK SERVICE ORGANIC ENVIRONMENTAL LAWS SMOKE WILDLAND BOOKSTORE GET INVOLVED DONATE VOLUNTEER WORK US NATIONAL PARK SERVICE EMPLOYMENT YOUTH CONSERVATION CORPS BUSINESS AUTHORIZED SERVICE STEAM SHORELINE TRIPS COMMERCIAL AUTHORIZATION PLANNING MANAGEMENT AND PLANNING ADAPTIVE MANAGEMENT ACCESS IN WINTER DOCUMENTS RULE SEASON VULNERABILITY TIMELINE THE ROLE FUTURE TECHNICAL MAMMOTH HOUSING FONSI CONSERVATION STRATEGIC INTRODUCTION CATEGORIES INFO ALERTS RESERVE CONTACT WEASEL WEASELS SCIENTIFIC NAME MUSTELA ERMINEA IDENTIFICATION INCHES SHORT MALES LIGHT BROWN ABOVE WHITE BELOW IN SUMMER EXCEPT COMPARE HABITAT DEER MICE WILLOWS SPRUCE BEHAVIOR BREED LITTER YOUNG LEAP THREE TIMES HUNT RODENT MAILING ADDRESS ROAD PLEASE DIAL TOOLS SITE INDEX CONNECTED FACEBOOK TWITTER INSTAGRAM YOUTUBE FLICKR DEPARTMENT OF THE INTERIOR PRIVACY POLICY FOIA NOTICES DISCLAIMER NO FEAR ACT ITUNES