At temperatures of around 2,000°C, sand turns into glass. Sometimes, in the event of a lightning strike (or, even rarer, a meteor hit) the resulting heat can fuse the grains together and produce glass entirely naturally. This is not what happened at California’s Glass Beach.
Discovering the World's Most Unusual Beaches - InsureandGo Australia
Glass Beach. Fort Bragg, CA. Formerly a dumping ground by the
Glass Beach – Fort Bragg, California - Atlas Obscura
I Glass Beach is a beach adjacent to MackKerricher State Park near
Tourists flock to former rubbish dump that's transformed into
Glass Beach – Fort Bragg, California - Atlas Obscura
Glass Beach – Fort Bragg, California - Atlas Obscura
Glass Beach, The Beach that was Created by A Pile of Garbage Glass
Beachcombing 101: A Door County Treasure - Sea Glass
Enjoy the Wonder of Ft. Bragg's Glass Beach While You Still Can
Glass Beach, California -- how to turn a dump into something wonderful
Former Dump Is Now Glass Beach in Fort Bragg, California