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State Park

Windley Key Fossil Reef Geological State Park

Florida · FL

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We display cached information from agency feeds. Hours, fees, permits, closures, fire restrictions, and conditions change without notice. Outdoors is not the permitting authority. Confirm current conditions for this park using the links above before you go — you are responsible for compliance. Last verified by us: Aug 16, 2026. Spot an error in our data?

About

Windley Key Fossil Reef Geological State Park is a Florida State Park located at mile marker 85.5 on US 1 near Islamorada. It was a former quarry used by Henry Flagler in the early 1900s to help his building of the Overseas Railroad. Following the railroad's completion, it was a source of decorative stone pieces called Keystone. Now on display are exposed sections of fossilized coral and some of the original quarry machinery. The Hurricane Monument at Mile Marker 82 in Islamorada is constructed of Keystone from the quarry.

Source: Wikipedia — text licensed CC BY-SA 4.0. Verify alerts and operational details with the managing agency below.

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Hunting in this park

This park overlaps hunting unit

During hunting seasons, wear blaze orange and check regulations — see the Florida hunting page

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