Park
Erratic Rock State Natural Site is a tiny 4.4-acre day-use park in Yamhill County, Oregon, USA, perched atop a foothill of the Northern Oregon Coast Range between Sheridan and McMinnville off Oregon Route 18.
It showcases the largest glacial erratic in the Willamette Valley—a massive 90-ton (or 40 short-ton) boulder of banded argillite transported over 500 miles from Montana's Northern Rocky Mountains via iceberg during Ice Age Missoula Floods 12,000 to 17,000 years ago, deposited when the ice melted.
Acquired in 1956, the site features a short 0.2-mile paved trail past vineyards and orchards to the rock, interpretive signs explaining its geological journey, a picnic table, birdwatching opportunities, and sweeping views of the valley, farms, vineyards, Coast Range, and distant Cascades on clear days.
| Address | Erratic Rock State Natural Site, McMinnville, OR 97128, United States |
| Phone | +1 800-551-6949 |
Erratic Rock State Natural Site is located in Oregon, United States.
Erratic Rock State Natural Site is situated in the state of Oregon.
The main phone number for the Erratic Rock State Natural Site is +1 800-551-6949.
The address of Erratic Rock State Natural Site is Erratic Rock State Natural Site, McMinnville, OR 97128, United States.
Yes, Erratic Rock State Natural Site is family-friendly and attracts visitors of all age groups.
Visitors usually spend a few hours to a full day exploring Erratic Rock State Natural Site.
Yes, there are several hotels and accommodations near Erratic Rock State Natural Site in Oregon.
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