I wasn't at Watkins Glen for "Summer Jam" on this day in 1973, but some 600,000 fans were there making it a bigger crowd than the original "Woodstock".

Here's what it was all about, according to Wikipedia:

"The Summer Jam at Watkins Glen was a 1973 rock festival which once received the Guinness Book of World Records entry for "Largest audience at a pop festival." An estimated 600,000 rock fans came to the Watkins Glen Grand Prix Raceway outside of Watkins Glen, New York on July 28, 1973, to see the Allman Brothers Band, Grateful Dead and The Band perform."

Watch this incredible video of 8mm home movie film and still photographs of a guy who was there, documenting his experience. Like, far out man!