Hundreds of pebble towers have popped up on a British beach during the coronavirus lockdown.<br /><br />The stone stacks, called cairns, have been assembled by walkers strolling along Whitley Bay beach, Newcastle, as they enjoy their daily exercise session.<br /><br />The towers are now a feature of the local landscape - and some even carry messages. One wishes 'Lewis' a 'happy 21st birthday'.<br />The structures are yet to fall foul of waves from the high tide, while members of the public have been spotted sitting among them at sunrise.<br /><br />Cairns were traditionally erected as landmarks to indicate trails, borders or locations where treasure was buried.<br />
