The document announces an obstacle challenge event hosted by the Obstacle Horse Association of North America (OHANA) on June 21, 2015 at the Shepard Rd. Mountain Trail in Clatskanie, Oregon, which aims to test riders and horses at the appropriate technical level. The event details include registration fees and times, prizes, and links to descriptions of the challenge levels and scoring information. Riders can participate for $50 for their first run and $25 for their second run, with fees including a one-year OHANA membership and permanent posting of scores.