What happened
A certificated private pilot was performing a landing on a gravel bar located near a remote river. The aircraft, which was equipped with tundra tires and featured a tail wheel configuration, was being operated as part of a hunting and guide business.
The pilot initiated the landing toward the west. During the approach, the pilot's vision was obscured because the sun was shining in his eyes. While on the approach, the left main landing gear made contact with an unseen log on the terrain. This impact caused the airplane to nose over.
The accident resulted in damage to the vertical stabilizer, the right wing, the lift struts, and the landing gear. At the time of the event, calculations determined the sun was at a 5.2 degree elevation with a true azimuth of 269.6 degrees from the site of the accident.