The Summit Building & Museum was constructed by the Civilian Conservation Corps in the late 1930s, the beacon tower sits directly on top of the highest peak of Mount Diablo. The sandstone for the building was quarried from nearby Rock City.
Standard Oil placed a ten-million-candlepower aerial navigation beacon seen here on the summit in 1928. The beacon was so powerful that it could be seen by ships 100 miles at sea.
Our third peak prompts our third group photo
Standard Oil placed a ten-million-candlepower aerial navigation beacon seen here on the summit in 1928. The beacon was so powerful that it could be seen by ships 100 miles at sea.
Our third peak prompts our third group photo