1 active Glacier alert
- ClosureTwo Medicine Campground closed for 2026 constructionTwo Medicine Campground is closed throughout 2026 because of construction in the Two Medicine developed area.Official details
Overview
About East Tunnel
Why stop
- A striking 408-foot tunnel cut through Piegan Mountain.
Heads up
- It is a brief drive-through, not a separate walk.
Map
Where it is
Loading the Glacier map
Full mapPlan your stop
Before you go
The highest, rockiest slopes around here are a summer buffet for grizzly bears.
Glacier Tour Guide
Your drive to East Tunnel, narrated.
Parkwolf is a GPS audio tour guide for Glacier National Park. As you drive, it chimes in with what’s ahead: hidden gems, upcoming stops, history, geology, and wildlife, right through your car’s speakers.
See the Glacier audio tourRecorded for this place
East Tunnel0:00 / 0:17
“You’re approaching East Tunnel, where Going-to-the-Sun Road cuts four hundred and eight feet through Piegan Mountain. Carving this passage was one of the road builders’ hardest jobs. Take it in as you drive through.”
Plays as you drive up to East Tunnel in the Parkwolf Glacier Tour Guide.
More stories near here in the app
- Lunch Creek
- Logan Pass and Hidden Lake
- Siyeh Bend and Siyeh Pass
- Oberlin Bend
- 204 audio storiesacross Glacier’s roads, triggered by GPS as you drive
- Wildlife heatmapsfor Grizzly Bear, Wolverine, Mountain Goat, and 13 more
- Works offlinemaps, 157 trails, 91 places, and audio download before you lose signal
- CarPlay readysimple controls built for the drive
“Our first time to glacier and we used the audio portion for Going to the Sun Road. Wonderful information with perfect advice of what to see and do along the road.”
Guide
More about East Tunnel
What you drive throughEast Tunnel is a 408-foot tunnel through Piegan Mountain on Going-to-the-Sun Road, just east of…
East Tunnel is a 408-foot tunnel through Piegan Mountain on Going-to-the-Sun Road, just east of Logan Pass. The road disappears into a dark opening in the cliff, then curves back into the open valley. It is a quick engineering landmark you experience from your vehicle, not a separate walk.
A hard cut in the mountainCarving the tunnel was one of the hardest challenges in building Going-to-the-Sun Road.
Carving the tunnel was one of the hardest challenges in building Going-to-the-Sun Road. The rock around the portal makes the scale of that work easy to see. From the east approach, the opening frames Clements Mountain across the valley.
Keep it a drive-throughTake in the tunnel as part of the drive.
Take in the tunnel as part of the drive. Do not stop or walk in the tunnel or roadway for photos; use only a signed, designated pullout if you want to take in the view. This alpine stretch closes seasonally, so check road access before planning around it.
Wildlife
Wildlife in Glacier
404 sightingsGrizzly BearMost seen around 6 AMSighting map
11 sightingsWolverineMost seen around 8 PMSighting map
1,173 sightingsMountain GoatMost seen around 6 AMSighting map
1,000 sightingsBighorn SheepMost seen around 6 AMSighting map
395 sightingsMooseMost seen around 6 AMSighting map
506 sightingsBlack BearMost seen around 8 PMSighting mapSighting maps show where each species has been reported across Glacier. Wildlife moves, so no sighting is guaranteed.
