Mammoth Spring State Park, State park in Mammoth Spring, Arkansas.
Mammoth Spring State Park centers on a massive spring that discharges roughly nine million gallons of water per hour. The flow creates a 10-acre lake that feeds into Spring River downstream.
The park developed around a railroad depot built in 1886 to serve the Frisco Line. The station building was later restored and converted into a museum dedicated to railroad history.
The Welcome Center displays regional artifacts and shares stories about Ozark heritage and the role of water in local life. Visitors learn how the spring has shaped settlement patterns in this area.
The park provides picnic areas, walking trails, a playground, and other amenities open during daylight hours. Visitors should wear sturdy shoes since pathways vary in surface and steepness.
The spring received National Natural Landmark status for its exceptional water discharge and rare geological formations. Few places in the region show such powerful underground water systems at the surface.
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