Entrance Portal Interpretive Site


photo of an entrance sign

Entrance Portal Interpretive Site sits along the Bighorn Scenic Byway just as you enter the forest.

Syncline Thrust Fault

Across the road is a thrust fault/syncline formation, exposed by the road cut. The fault occurred when pressure caused the rock layers to push up creating the non-conforming layers and downward fold (syncline).  The Bighorn Mountains reached their highest elevation about 60 million years ago.  Uplift of the area by movement of the Earth’s crust caused this folding.


photo of an entrance sign interpretive sign

At a Glance

Usage: Light
Restrictions: No Camping, Pack It In, Pack It Out
Closest Towns: Dayton, WY
Water: No
Restroom: No
Operated By: Forest Service
Information Center: Tongue Ranger District

General Information


From Dayton, take Hwy 14 west for about 5.5 miles to the forest boundary. Pullout is on the right side of the road.

Recreation Map

Map showing recreational areas. Map Information


Nature Viewing

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Outdoor Learning

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Interpretive Areas

Scenic Driving

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Areas & Activities


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