On June 20, 1993, at 0600 Alaska daylight time, a wheel equipped Cessna 172 airplane, N7300G, registered to and operated by Steve Reimers, of Iliamna, Alaska, nosed down and dragged a wing during a landing on a gravel strip in the Katmai National Forest, near Illiamna. The personal flight,operating under 14 CFR Part 91, departed Naknek, Alaska, and the destination was the accident site. No flight plan was filed and visual meteorological conditions prevailed. The FAA Commercial Certificated Pilot-in- Command and the two passengers were not injured and the airplane received substantial damage. According to the Pilot-in-Command, he landed on the gravel beach and the nose wheel sank into the sand. The airplane nosed down and struck its propeller and dragged the wing. The Pilot stated he expected a more firm surface.