A World War One-era German submarine has started to emerge from a beach in northern France.
Historians say the UC61 was sunk by its crew after being caught laying mines in July 1917.
The submarine started to become visible at low tide on the beach in Wissant, near Calais, in December.
One tour guide, Vincent Schmitt, was lucky enough to stumble upon it at the right time.
Schmitt told the Voix du Nord newspaper his discovery was "impressive" and noticed several months ago "that a piece of junk came out" but this time "the wreck was clearly visible".
The U-boat had left Zeebrugge in Belgium and was heading to Boulogne-sur-Mer and Le Havre to lay the mines.
According to the local newspaper, the crew was forced to flood and abandon the vessel in Wissant after sea levels dropped.
But just as the 25 crewmembers were caught and surrendered to authorities, they detonated the mines inside the submarine, blowing it underwater until its latest resurgence.