Sunrise 5:48 am: Mystery work on field

Just after crossing the bridge over San Francisquito Creek, the Dawn Joggers run along a bike path that's parallel to the golf course. For many years, there was an open field as well as a dressage ring between the path and the fairways. Then about five years ago, maybe longer, a construction site was installed on the field. The DJs have watched on many mornings as the huge dirt carrying trucks come to pick up a load of dirt or big dump trucks arrive to deposit dirt. On Friday they noticed that a large section of what was once field had been leveled. Today, it was still level but about four feet of dirt had been spread over it and markers installed. What's going? It will on the DJs watch list.