More recent pics. So much trash and glass has been dumped on the beaches of Vladivostok, that the glass pieces were broken and ground up against each other and surrounding sand, creating rounded "jewel" stones of glass that cover the beach. Looks pretty, but it's still dangerous.
Fort Bragg, California, USA
Yes, Fort Bragg, a military base beach, where the military has been dumping some of its trash for decades, has one too. But the picture I posted is of the breach in Vladivostok, where beach gowers were the ones tossing trash.