Volunteers for aid groups supporting Syrian refugees in Greece have come together to create a message of peace out of the life jackets the refugees left behind.

The workers for Greenpeace, Médecins Sans Frontières/Doctors Without Borders, and other groups created the message to honor those who left the life jackets behind and offer hope that conditions will improve, Greenpeace said in a statement.

The volunteers are working on Lesbos, a Greek island where more than 500,000 refugees from Syria, Afghanistan, and Iraq have landed after crossing the Mediterranean Sea.

These refugees have left behind thousands of life jackets, which have grown into a huge rubbish dump on the island.

"The dump site stands as a statue, a silent reminder of the risks and that so many more still hold out hope of a safe crossing," Greenpeace said. "It also includes the life jackets of those who never made it, of those who lost their lives at sea and can never return home or continue their journey north."