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They then climb the zig-zag ascent of the Devil's Staircase footpath in Glencoe before reaching their final destination.

They were heading to the north ridge of Tryfan on a trail with no marked footpaths and requires scrambling to reach the summit.

Visitors will be able to see the poppies as part of a general admission ticket to the Tower of London, though a small part will be visible from the public footpath.

"People are walking off footpaths and they're damaging the heritage features."

Visitors can see the new installation as part of a general admission ticket to the Tower of London, although a small part will be visible from the public footpath.