Place

Clarno Palisades

Tall tan cliffs with sagebrush covered slopes and trees in the foreground and blue skies
Clarno Palisades

NPS Photo / P. Gamman

Quick Facts
Location:
Clarno Unit
Significance:
The Palisades are the most prominent landform and are volcanic lahars, or mudflows, that formed 54-40 million years ago in a lush semi-tropical rainforest environment.

Accessible Sites, Benches/Seating, Historical/Interpretive Information/Exhibits, Information Kiosk/Bulletin Board, Parking - Auto, Parking - Bus/RV, Picnic Shelter/Pavilion, Picnic Table, Scenic View/Photo Spot, Toilet - Vault/Composting, Trailhead, Trash/Litter Receptacles

The Palisades are the most prominent landform and are volcanic lahars, or mudflows, that formed 54-40 million years ago in a lush semi-tropical rainforest environment. Tiny four-toed horses, huge rhino-like brontotheres, crocodilians, and meat-eating creodonts that once roamed ancient jungles are now found in the rocks of the Clarno Unit, as well as an incredibly diverse range of plant life. Leaves, fruits, nuts, seeds, and petrified wood from 173 species of trees, vines, shrubs, and other plants have been found here thus far.

Glimpses of fossilized plants can be seen along the cliff walls.

John Day Fossil Beds National Monument

Last updated: April 8, 2021