High ground is behind a private home, just south of a radio tower.
Get permission at the retail store to hike the orchard. The eastern point is easily found by working uphill through the orchard. The western point is reached by an east-west dirt road all the way through the orchard and vineyards, almost to the private homes to the west. Park in lot and walk to high ground, adjacent to the lot on probably disturbed ground. For the northern point, continue north on Calumet to 1.6 miles.