Contra Costa County Highpoint Trip Report
Mount Diablo (3,849 ft)
Date: May 10, 2006
Author: Rich Wilson
We drove the road to the summit. I was surprised to see there was a hole in the
floor of the observation tower in order to afford access to the true summit.
Mount Diablo was used for surveying parts of California, Nevada and Oregon,
so this summit is of historical interest, hence the hole. The tower is open
Wednesday through Sunday, year round, staffing permitted. Plan on visiting when
the tower is open in order to properly claim this one.