Mount Diablo Initial Point is the starting point for establishing land boundaries throughout most of Northern California and all of Nevada.

Original SMASH: September 11, 2021. This was a return visit to La Jolla to find marks that were only recently added to the NGS Database!

Sorting out an "Oops!" by U.S. Army Corps of Engineers Surveyors dating back to 1941 and tying up other "loose ends" in the desert.