Erratic Rock State Natural Site

The Erratic Rock is a massive 90-ton boulder composed of banded argillite, a type of rock not naturally found in Oregon. Its significance lies in its origin: it traveled over 500 miles from the Northern Rocky Mountains, specifically a 1.5 billion-year-old formation in Montana, embedded within an iceberg during the cataclysmic Ice Age floods between 12,000 and 17,000 years ago. When the ice melted, it was deposited in its current location, making it the largest glacial erratic in the Willamette Valley and a tangible piece of Ice Age history.

The hike to the Erratic Rock is a short, quarter-mile uphill walk. The terrain is generally considered easy, making it accessible for most visitors. Comfortable footwear is recommended for the walk through fields and vineyards to reach the boulder and the prime viewing area.

Yes, Erratic Rock State Natural Site is generally dog-friendly. Leashed dogs are welcome on the trail and at the site. Please ensure you clean up after your pet to maintain the natural beauty of the area for all visitors.

No, Erratic Rock State Natural Site has very limited amenities. There is no running water, restrooms, or significant shade available on site. Visitors should plan accordingly, bringing their own water and making restroom stops before arriving.

No, there is no entrance fee or permit required to visit Erratic Rock State Natural Site. It is a day-use-only park that is free and open to the public.

There is a small parking area available at the base of the site. Given its popularity, especially on weekends or during peak seasons, parking can fill up quickly. Arriving earlier in the day is often recommended to secure a spot.

Due to the uphill, unpaved quarter-mile trail through fields and vineyards, Erratic Rock State Natural Site is not considered wheelchair accessible. Strollers with robust wheels might manage, but the uneven terrain could be challenging.

Given the limited amenities, it's advisable to bring water, snacks, and sun protection (hat, sunscreen) as there is no shade. Comfortable walking shoes are a must for the short uphill hike. Don't forget your camera for the panoramic views!

Erratic Rock State Natural Site is located between McMinnville and Sheridan, both of which offer various dining and accommodation options. McMinnville, known for its wine country, has a wider selection of cafes, restaurants, and hotels, approximately seven miles away.

Yes, the site is accessible year-round. A winter visit can offer a unique, peaceful experience with potentially crisp air and different views of the valley. However, be prepared for colder temperatures and potentially muddy conditions on the trail. Always check local weather forecasts before heading out.

Erratic Rock State Natural Site is a day-use-only park. While specific gate hours are not typically posted, it is generally accessible from dawn until dusk. Visitors should plan their visit to conclude before nightfall.

Yes, there is one picnic table available at the site, offering a lovely spot to enjoy a meal with a view. However, remember there is no shade, so plan accordingly, especially on sunny days.