On June 26, 1993, at 1800 hours Pacific daylight time, a LET Blanik L 13, N82AS, collided with the terrain during the landing roll at a private airstrip near Enumclaw, Washington. Visual meteorological conditions prevailed at the time and no flight plan was filed for the local flight. The glider was substantially damaged and both certificated private pilots were not injured. The second pilot reported that he was asked to fly with the pilot in command to familiarize the pilot in command with the area. The second pilot sat in the rear seat, while the pilot in command was in the front seat and in control of the flight controls for the entire flight. After the flight, a landing was set up to the east. The glider touched down approximately 300 feet from the end of the runway. During the landing roll, the left wing caught in the tall grass next to the runway and the glider spun to the left and skidded a short distance. The right wing contacted the surface and the glider came to rest approximately 90 degrees from the runway heading. The second pilot reported that touchdown is normally made at 500 feet down the runway where the grass is always kept short. The second pilot reported that he did mention this to the pilot in command while on final approach.