Metallica and Metallica members celebrated late bassist Cliff Burton on social media. Official account of Metallica has shared a rare photo of Cliff, and wrote:

“Gone but never forgotten!
Happy Birthday, Cliff – we miss you.
#happybirthday #cliffburton #cliffemall #majorrager”

See the photo below.

Metallica lead guitarist Kirk Hammett has posted a photo of himself with Cliff, and wrote:

“To our long lost brother – Happy Birthday ⚡️
You will be remembered forever 🤟🖤🤟 #cliffburton #metallica #metfamily”

Drummer Lars Ulrich wrote:

“Happy Birthday Cliff.
Thinking about you big man..
#happybirthday #cliffburton”

Anthrax guitarist shared a photo, and remembered one of an interesting moments with Cliff, and wrote:

“Happy birthday Cliff! This pic was taken at the Marquee in London circa March 1984 right around the time we got arrested.”

Anthrax drummer Charlie Benante wrote:

“Happy birthday to the one and only #cliffburton . He would always come out and headbang during our set. It would always push me harder and make me happy! The famous #pancakes story came from this tour . I always thought Cliff was an artist, a musician, an original ( he wore bell bottoms in a tight pants world) , I think he made that difference in those first 3 albums -miss you bro – Happy Birthday !”