Sometimes it’s hard to keep a good secret.

One of Grant County’s secrets — at least to outsiders — is Arch Rock, a magnificent “nature-created” gem nestled in the Malheur National Forest.

A short day trip venture through the woods is all it takes to visit this little-known treasure set amid the tranquility of wildflowers, pine and fir trees, and rippling creeks.

Stately Arch Rock and similar geological oddities nearby were created from volcanic ash tuff — porous rock leftover from eruptions millions of years ago. Interpretive signs along the trail offer prehistorical information about the area — how it was once a “tropical paradise” before the Ice Age and how volcanos eventually altered the landscape.

The well-marked looped trail is just over a half-mile, short and easy for hikers of all ages, but it’s narrow and steep. I was glad I grabbed my hiking stick — always within reach in my car for impromptu adventures. Other formations along the way are a treat in their own right — full of caves, picture frame-sized holes and outcroppings.

And waiting at the top? Arch Rock with the reward of spectacular views from both directions. Nearby smaller rocks offer a welcome spot to relax and enjoy a snack or picnic lunch while taking in the remarkable scenery.

While Arch Rock is far from the main highways, it’s not difficult to find or reach.

Traveling on Highway 26, about 9½ miles east of John Day or 3½ miles west of Prairie City, turn north on Keeney Fork Road (County Road 18). Continue about 9½ miles to “Four Corners.” Turn right (east) on Forest Road 36. The road is graveled, but wide. Any vehicle, motorcycle or bicycle will have no trouble at all.

After almost 9 miles, turn right (south) on Forest Road 3650/478. Signs point the way to Arch Rock — you can’t miss it! Continue another half mile or so, over Camp Creek Bridge, to a wide area where a couple of other forest roads connect. A brown “Arch Rock Trail 258” sign to the left beckons you to begin your adventure.

For folks traveling from County Road 20, about 18 miles from Austin Junction (Highway 7), head south on Forest Road 36. After about five miles, turn left (south) on Forest Road 3650/478 and then to the trailhead.

On my recent trip there, I discovered a bit of a “shortcut” to the famous rock. At the trailhead area continue driving straight on Forest Road 3650 for about a quarter-mile or so. Arch Rock is easily visible up the hill to the left, which might interest those unable to make the trek on foot.

National parks and other famous landmarks? They’re great — and in fact, I’m currently progressing well with my goal of visiting all 63 U.S. national parks.

But nothing beats an attraction that hits all three tourist high points — no crowds, reservations or fees.

Even if it means revealing a secret.