On July 25, 2000, approximately 1015 mountain daylight time, a Fudold Avid Magnum, N200UB, was substantially damaged when it impacted terrain during a go-around attempt at Jackson County Airport, Walden, Colorado. The private pilot and his passenger were not injured. The airplane was being operated by the pilot under Title 14 CFR Part 91. Visual meteorological conditions prevailed for the local flight that originated approximately 1 hour 25 minutes before the accident. No flight plan had been filed. The pilot said that during a landing attempt, the airspeed got low and he flared a "little high." He applied full power to perform a go-around, but the airplane "mushed" to the ground. The impact sequence bent both wings and wrinkled the fuselage. The weather conditions at the time of the accident were as follows: temperature 77 degrees Fahrenheit; altimeter setting 30.28 inches of mercury; density altitude 10,799 feet (elevation 8,149 feet).