Defenses of the volcanic island included an extensive tunnel network which hollowed out Mount Suribachi.  
This battle began due to interference with B-29 raids coming from the namesake location, and it was preceded by the largest naval bombardment of the Pacific War.  The island's airfield was one of the main objectives of General H.M. Smith's Marines, but General Kuribayashi's tenacious defense with a garrison of twenty-one thousand cost the Marines sixty-eight hundred men. Defenses of the volcanic island included an extensive tunnel network which hollowed out Mount Suribachi.  For 10 points, name this February through March 1945 battle which saw the taking of an iconic photograph of Marines raising the American flag.
This battle began due to interference with B-29 raids coming from the namesake location, and it was preceded by the largest naval bombardment of the Pacific War.  
Battle of {Iwo Jima}