I WAS E/B HWY 26 AROUND MANNING, OR AT APPROXIMATELY 50-55 MPH (POSTED 55). AS I WAS PASSING A FRUIT STAND ON MY RIGHT, I HEARD A LOUD BANG AND THE VEHICLE JERKED TO THE RIGHT JUMPED THE CURB AND I VEERED TO THE RIGHT TO AVOID THE STEEL GUARD RAIL AND DROVE INTO A DROP OFF ABOUT 20 FEET BELOW THE ROADWAY AND STRUCK A PILE OF 4-6" LOGS IN TALL GRASS. NONE OF THE AIRBAGS DEPLOYED DURING THE COLLISION.