Near the summer house at a nearby Dam, Lompico, CA
Lake Lompico is a Reservoir in Santa Cruz County, California. It has an elevation of 276 meters, or 906 feet(2)
Known as Newell 23-002 Dam: Water Storage Dam near Lompico.(3)
The nearest places to Lake Lompico are Van Allen Ridge (1500 feet east), Lompico (2000 feet northwest), Zayante (1 mile south), Eagle Dell Peak (1 mile west), and Loch Lomond (1½ miles northwest).
Jerry rehearsed here in
"Also in "Lampico"Jerry & Daniel would practice their guitars at a nearby dam."(1)
1.)^Jackson, Blair, Garcia: An American Life, pg. 24