Greater Yellowstone Ecosystem wilderness guide
Ecosystem · ID, MT, WY

Greater Yellowstone Ecosystem

The Greater Yellowstone Ecosystem is one of the largest nearly intact temperate-zone ecosystems on Earth, offering an unparalleled blend of geological wonders and diverse wildlife.

Ecosystem22 million+4+ Trails

Designation

Ecosystem

Total Wilderness Area

22 million+

Elevation / Terrain

Diverse Wilderness

Field Editorial Guide

About Greater Yellowstone Ecosystem

The Greater Yellowstone Ecosystem is one of the largest nearly intact temperate-zone ecosystems on Earth, offering an unparalleled blend of geological wonders and diverse wildlife.

Wilderness Landscape & Natural Heritage

The Greater Yellowstone Ecosystem (GYE) spans over 22 million acres and includes Yellowstone National Park, parts of Grand Teton National Park, several National Forests, and numerous wilderness areas across Idaho, Montana, and Wyoming. This expansive area encapsulates a rich tapestry of landscapes, from rugged mountains to sweeping river valleys, supporting hundreds of species of wildlife, including grizzly bears, wolves, and herds of elk and bison. The ecosystem is renowned for its geothermal features, with over 10,000 such sites in Yellowstone alone, offering a glimpse into the Earth's fiery seams. The human history of the area is just as vibrant, embodying stories of indigenous peoples, pioneering explorers, and conservation triumphs. Recreational opportunities are plentiful, with endless trails for hiking and biking, pristine rivers for fishing and kayaking, and open parks for camping and wildlife spotting.

Field Guide · Ecosystem
Adventure Destinations

Notable Destinations Near Greater Yellowstone Ecosystem

Scenic viewpoints, outdoor landmarks, and notable points of interest within 60 miles.

Key Wilderness Highlights

✦ Old Faithful Geyser✦ Grand Prismatic Spring✦ Lamar Valley for Wildlife Viewing✦ Beartooth Highway
Wilderness Recreation

Outdoor Adventures in Greater Yellowstone Ecosystem

Explore curated guides for top outdoor sports, trail networks, and wilderness activities.

The Ranger Station

Visitor Logistics & Essential Planning

Everything you need to know about entrance passes, seasons, visitor centers, road transit, and wildlife safety in Greater Yellowstone Ecosystem.

Passes & Fees

Entrance Requirements & Interagency Passes

Entrance fee required or national park pass accepted

Wilderness Checklist

Carry paper topographic map & compass in remote zones.
Store all food and scented items in approved bear canisters.
Check wildfire / smoke advisories before backcountry departure.
Pack out everything you pack in (Leave No Trace).
Wilderness Stays

Camping & Overnight Stays in Greater Yellowstone Ecosystem

Frontcountry developed campgrounds, backcountry wilderness permit guidelines, and starry-night camping advice.

Madison Campground

Located near the banks of the Madison River, offering easy access to popular park sites.

Slough Creek Campground

Offers a more secluded experience in the Lamar Valley, ideal for wildlife enthusiasts.

Adventure Basecamps

Gateway Towns Near Greater Yellowstone Ecosystem

Stay, dine, and gear up in these mountain towns and scenic basecamps surrounding the park.

Yellowstone National Park, Wyoming
⌖ 13.63 miles
Gateway Basecamp

Yellowstone National Park, Wyoming

Yellowstone National Park offers adventurers unrivaled geothermal features and abundant wildlife. From hiking past geysers to taking in roaring waterfalls, it's a must-see wilderness spot.

Summer and Fall
Explore Town
Yellowstone National Park, Montana
⌖ 13.63 miles
Gateway Basecamp

Yellowstone National Park, Montana

Yellowstone National Park offers awe-inspiring landscapes and adventures, from hiking its trails to witnessing its famous geysers. Spot iconic wildlife and experience the park's unparalleled natural wonders.

Spring through Fall
Explore Town
Canyon Village, Wyoming
⌖ 21.78 miles
Gateway Basecamp

Canyon Village, Wyoming

Canyon Village serves as an ideal hub for exploring the majesty of Yellowstone. From hiking trails with stunning canyon views to geothermal wonders, it’s perfect for adventurous souls.

Summer and Fall
Explore Town
West Yellowstone, Montana
⌖ 29.91 miles
Gateway Basecamp

West Yellowstone, Montana

West Yellowstone, a premiere gateway to Yellowstone National Park, is perfect for outdoor enthusiasts. Experience hiking, wildlife viewing, fishing, and snowmobiling against stunning natural backdrops.

Summer and Winter
Explore Town
Island Park, Idaho
⌖ 37.18 miles
Gateway Basecamp

Island Park, Idaho

Island Park is an outdoor paradise in Idaho, offering incredible hiking, fishing, and snowmobiling opportunities. Surrounded by natural wonders, it's perfect for adventure and relaxation.

Summer and Winter
Explore Town
Mammoth, Wyoming
⌖ 38.28 miles
Gateway Basecamp

Mammoth, Wyoming

Mammoth, WY is your doorstep to Yellowstone's wild beauty. Visitors can enjoy hiking, fishing, and witnessing geothermal wonders. It's a perfect spot for adventure seekers looking to explore the great outdoors.

Summer and Fall
Explore Town
Expert-Led Wilderness Expeditions

Guided Experiences in Greater Yellowstone Ecosystem

Explore scenic backcountry routes and epic wilderness adventures with certified local mountain guides, naturalists, and outfitters.

Winding Trails, Big Skies & Intimate Encounters with Nature
ADVEXPEDITION
Yellowstone National Park, WY/MT/ID
Guided TourADV Bookable

Winding Trails, Big Skies & Intimate Encounters with Nature

An 8-hour personalized hiking adventure led by a professional naturalist into Yellowstone’s quiet backcountry, tailored to your interests and fitness.

Guided TourPT2HCertified Outfitter
Bookable OnlineBook Trip
Witness Yellowstone’s iconic geysers and prismatic springs
ADVEXPEDITION
Yellowstone, Wyoming
Guided TourADV Bookable

Witness Yellowstone’s iconic geysers and prismatic springs

A full-day transportation experience that takes you to Old Faithful, the Grand Prismatic Spring and the Grand Canyon of the Yellowstone—this guide orients you to the route, timing, and what to expect.

Guided TourPT2HCertified Outfitter
Bookable OnlineBook Trip
Paddling West Thumb: A Private Kayak Tour on Yellowstone Lake
ADVEXPEDITION
Yellowstone National Park, Wyoming
PrivateADV Bookable

Paddling West Thumb: A Private Kayak Tour on Yellowstone Lake

A private, guided kayaking tour along the shores of Yellowstone Lake through the West Thumb Geyser Basin—personalized pacing, a dedicated guide, and options for families and larger groups.

PrivatePT2HCertified Outfitter
Bookable OnlineBook Trip