The correct answer is true.
It is true that the famous music festival at Woodstock ended the decade of the 1960s.
From August 15 to 18, 1969, the Woodstock Festival presented the most important stars in the world of rock and folk music in Bethel, New York, 43 miles southwest Woodstock. This festival is an iconical reference to what was happening with the young people of America at that time. Great artists were part of the lineup such as Santana, Joan Baez, Canned Heat, The Who, Janis Joplin, the Grateful Dead, Joe Cocker, Johnny Winter, and Jimmy Hendrix.