It is said that Jim Morrison went to Alameda High for a brief time, so he might have hung around there too.
Somebody had posted a cache at the same spot in honor to him a few years back but it has been archived.
This cache is to revive the memory.
"At first flash of Eden, We race down to the sea.
Standing there on Freedom's shore.
Waiting for the sun..."
"Waiting for the Sun" on the album Morrison Hotel (1970)
source from Wikipedia and Wikiquote