The vintage tailwheel airplane was on final approach to the runway in a left crosswind. A witness, who was also president of the airport flying club, was mowing grass adjacent to the runway and saw the accident. He stated that the airplane approached the runway low and was “crabbing hard” to the left. The pilot then initiated a go-around. The engine noise increased, but the airplane attempted a go-around at a 90° left angle to the runway. The airplane cleared trees, experienced a “power on stall,” and descended nose first into a grove. The pilot reported that he was injured in the accident and did not remember anything after being 25 ft over the runway on approach; however, he reported that there were no preimpact mechanical malfunctions with the airplane. Examination of the wreckage by a Federal Aviation Administration inspector did not reveal any preimpact mechanical malfunctions. The inspector noted substantial damage to the fuselage and right wing.