The Rockville Area in Oregon is a petrified wood site located in the far southeast corner of the state. You'll find it in Malheur County, near Succor Creek and only a few miles from the Oregon–Idaho border.

This site sits on Oregon's Owyhee Plateau, a region formed from massive volcanic eruptions during the Miocene Epoch, roughly 15 to 17 million years ago.

Wave after wave of rhyolite ash, volcanic tuff, and basalt lava stacked into thick, silica-rich layers. As all that rock cooled, silica-laden fluids seeped into the cracks and slowly hardened into agate, chalcedony, and jasper.

Whole forests got buried under the ash back then. Over time, silica replaced the wood cell by cell, turning fallen trees to stone. Erosion has chipped away at those layers ever since, and today, some fluorescent petrified wood can be found scattered across the hills and dry drainages.

Rockville Area Rockhounding

Petrified wood is the main find here, and there's a ton of it.

Most of what you’ll find is petrified wood in beige, gray, brown, and deep red, ranging from opal-rich to more chalcedony-based material. A lot of it won’t win lapidary prizes. But under a 365nm UV light, some pieces will glow—likely due to trace minerals or impurities within the silica. That’s a feature you don’t see at most Oregon sites.

Hunt longer and you’ll also turn up harder, better-preserved agatized wood with stronger patterns and clearer structure.

You'll also find chalcedony-filled geodes (some of which glow), plus agate, jasper, and common opal. Still, the wood is the star.

This remote corner of Oregon has more than just rocks.

The best base camp is Succor Creek State Natural Area, just north of Rockville. It is the closest spot to enjoy the Oregon high desert and explore the area from.

Leslie Gulch sits about 14 miles away and is well worth the scenic drive. With its towering rock walls and twisting canyon road, it's one of the most stunning spots in the region.

Want to cool off after a hot day of digging? Owyhee Reservoir and Lake Owyhee State Park offer great fishing, boating, and camping along the water.

For a relaxing soak, head to Snively Hot Springs, a wild geothermal spot in a scenic setting nearby.

Rockhounds often pair Rockville with other famous sites, too. Graveyard Point is known for its plume agate, while Haystack Butte offers more high desert treasures.

And if you want to go big, the wider Owyhee Canyonlands are a rugged paradise for hiking, scenic drives, and wildlife viewing.

🟡 The roads are rough, cell service drops out, and a 4WD with 10-ply tires is recommended, so come prepared.

🔴 It gets brutally hot here in summer, so pack thick gloves, sunscreen, plenty of water, and a geology pick, shovel, and pick.

The best base camp in the area is Succor Creek State Natural Area, just north of Rockville. It has free primitive camping with about 19 sites, vault toilets, and no hookups, all set in a beautiful canyon sitting along the creek.

It makes a perfect home base for exploring Rockville by day. Read the full guide here before you go: Succor Creek Campground.

If you'd rather have more comfortable accomodations, the nearest town is Homedale, Idaho about 17 miles away.

Lodging in Homedale, Idaho

Affordable vacation rentals for short and long term stay at Homedale