Was Woodstock the first big rock festival ever?

Woodstock, held in 1969, is often considered one of the first major rock festivals, but it was not the very first. Prior to Woodstock, events like the Monterey Pop Festival in 1967 had already set the stage for large-scale music gatherings. However, Woodstock is notable for its cultural significance and the scale of its lineup, which helped solidify the concept of the rock festival in popular culture.