The summer fun continues at Lake Red Rock. This Friday a geocaching 101 course planned. Park Ranger Tracy Spry says geocaching is a bit like a high tech treasure hunt. She says caches can be of all shapes and sizes and contain just about anything. The class will offer the basics of using a GPS unit and is free and open to the public. Geocachers should meet at the Howell Station Campground at 7 pm. Another course is also planned for Saturday.