Rivervale Tunnel Delta Region Get Directions Tell us why this business is your favorite! Physical Address: Ark. 135 Lepanto, AR 72354 Phone: 870-475-2415 Website: http://www.lepantoaralumni.com/STARAPPEAL.html GPS: N35.6110997 W90.3305002 An engineering and architectural marvel where one river flows under the other; listed on the National Historic Register Directions:6 miles north of Lepanto via Ark. 135 Add to Trip Planner