What happened
The pilot was conducting a flight for the purpose of practicing landings in an open pasture. The terrain consisted of flat ground covered with approximately five inches of grass. During the sequence, the pilot performed a normal wheel landing on the pasture surface.
Following touchdown, the pilot applied brake pressure while attempting to maintain the tail-up position using the elevator control. As the aircraft slowed, the tail rose upward, causing the Cessna (type not specified in source) to nose over and come to rest in an inverted position. The pilot was not injured.
The investigation
The pilot reported that there were no mechanical malfunctions or failures involving the engine or airframe prior to the impact. The aircraft sustained damage to the tail and the right wing during the accident.