ColdPrimitive

Castor River Shut-Ins

MO

About Castor River Shut-Ins

Castor River Shut-Ins, nestled in Missouri's Mark Twain National Forest, offers a rugged escape with its icy cold waters flowing through a narrow canyon. This primitive swimming hole features striking pink granite rocks, crystal-clear pools, and cascading waterfalls that create a dramatic, raw landscape. The combination of natural beauty and pristine, chilly water makes it one of the distinctive cold springs in Missouri.

Getting There

You reach Castor River Shut-Ins via a short 10-minute walk from a small, limited parking area near Eminence. The trail is easy but can be rocky, so sturdy shoes help. Since parking is scarce, plan your arrival early in the day and be mindful of others sharing this popular spot.

What to Expect

The water here is refreshingly cold, perfect for a brisk dip on a hot day, surrounded by massive pink boulders and natural cascades. The terrain is uneven and features slippery rocks, so caution is necessary when navigating. This Missouri swimming hole is lively during the summer but can get crowded, especially on weekends, which might impact the peacefulness of your visit. No facilities are available, preserving its wild feel.

Tips for Visitors

Visit on weekdays or early mornings to avoid heavy crowds. Bring water shoes for traction and swimwear suited for colder water. There are no fees, and the area is clothing optional, adding personal comfort choices to your experience. Respect the natural surroundings to keep this spot pristine.

Last updated December 21, 2025
Castor River Shut-Ins

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Access

Short Walk

10 min from parking

Parking

Limited

Fee

Free

Cell Service

Unknown

Crowds

Busy

Best Season

Summer

Nearby Springs

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