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Erratic Rock State Natural Site, Sheridan, OR

Photo: Dhoustonjackson, CC BY-SA 3.0, via Wikimedia Commons. Cropped and resized.

Sports & Outdoors

Erratic Rock State Natural Site

A small Oregon state site showcasing a huge boulder carried to the Willamette Valley by ancient floodwaters.

Sheridan, OR

About Erratic Rock State Natural Site

Erratic Rock is a small day-use state site in Yamhill County, set on a foothill of the Coast Range. Its centerpiece is a massive glacial erratic, a boulder that was transported during Ice Age floods and left behind when the ice melted. Visitors can take in broad views of the valley and picture the enormous volume of water that once filled it. Because the rock originated in the Northern Rocky Mountains, it is unusual for Oregon geology. The park was acquired by purchase from private owners in 1956 and is maintained by Oregon State Parks.

  • #glacial erratic
  • #Ice Age floods
  • #Willamette Valley
  • #day-use
  • #geology

What's around here?

The closest stops to Erratic Rock State Natural Site, ordered by straight-line distance. A few more like it, plus some different kinds of fun so you can build a full day.

  • Attractions

    Evergreen Wings and Waves Waterpark

    $25–$50

    An indoor waterpark in McMinnville, Oregon, with many slides and pools, open year-round.

    8.2 mi awaySwitch it up: Attractions

  • Museums
    Family Favorite

    North American Aerospace Museum

    $25–$50

    Stand under the Spruce Goose, Howard Hughes's giant wooden flying boat, among more than 150 aircraft and spacecraft.

    8.5 mi awaySwitch it up: Museums

  • Sports & Outdoors

    Maud Williamson State Recreation Site

    Check prices

    A small Oregon state park in the Willamette Valley with second-growth Douglas fir woods, a historic farmhouse, and a reservable picnic shelter.

    11 mi awayMore like this

  • Sports & Outdoors

    Willamette Mission State Park

    Check prices

    A 1,300-acre state park on the site of an 1834 Methodist mission, with trails, lakes, and river access north of Salem.

    13 mi awayMore like this

  • Nightlife
    Date Night

    Spirit Mountain Casino

    No admission fee

    Play slots, blackjack and craps at the Confederated Tribes of Grand Ronde's casino resort in Oregon.

    Transit: reachable by public transit

    15 mi awaySwitch it up: Nightlife

  • Sports & Outdoors
    Outdoor Adventure

    Southern Oregon Coast

    No admission fee

    Oregon coastal region from Coos Bay to the California border, with state parks and small beach towns.

    Transit: reachable by public transit

    19 mi awayMore like this

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