Riverfront Commercial Property in Mammoth Spring, ArkansasTo View All Listings in The Ozarks Click Here! Spring River Frontage | 940 Sq Ft Building on Two River Lots in Mammoth Spring, AROpportunity awaits with this rare Spring River property located right in the heart of Mammoth Spring, Arkansas. Situated on two riverfront lots, this 940 sq ft building offers stunning views of the Spring River .. ...