The KFRC Fantasy Fair and Magic Mountain Music Festival was an event held June 10 and 11, 1967, at the 4,000-seat Sidney B. Cushing Memorial Amphitheatre high on the south face of Mount Tamalpais in Marin County, California. Over two days (June 10th and 11, 1967), tens of thousands of music fans would participate in the first rock festival in American history.

Although 20,000 tickets were reported to have been sold for the event, as many as 40,000 people may have actually attended the two-day concert, which was the first of a series of San Francisco–area cultural events known as the Summer of Love. The Fantasy Fair was influenced by the popular Renaissance Pleasure Faire and became a prototype for large-scale multi-act outdoor rock music events now known as rock festivals. 

KFRC 610, the RKO Bill Drake “Boss Radio” Top 40 AM station in San Francisco, had significant influence in the music industry among both counterculture and commercial acts. This enabled festival organizer Tom Rounds, KFRC’s program director, to present a colorful and eclectic line-up of popular musicians from both in and outside the region. 

Canned Heat, Dionne Warwick, Every Mother’s Son, The Merry-Go-Round, The Mojo Men, P. F. Sloan, The Seeds, Blues Magoos, Country Joe and the Fish, Captain Beefheart, The Byrds with Hugh Masekela on trumpet, etc. were among the performers who appeared. The Fantasy Fair was also The Doors’ first large show and happened during the rise of the group’s first major hit, “Light My Fire”, to the top of the charts.

Performances were on a main stage and a smaller second stage. Various art-fair type vendors sold posters, crafts and refreshments from booths scattered in the woods around the amphitheater.

According to en.wikipedia; Source of photos: internet