The pilot reported that during a touch-and-go landing on a dirt airstrip, he encountered crosswind gusts during the landing flare. The pilot further reported that the flare was too high and during touchdown the airplane began to porpoise. Subsequently, the nose gear collapsed and the airplane nosed over.

The vertical stabilizer and left wing sustained substantial damage.

The pilot did not report any mechanical malfunctions or failures with the airplane that would have precluded normal operation.