Timelapse flora

I snapped the rosebay willowherb here  because it stood out against the black background but only later made the connection.

 The structure is actually an old Nissen hut, left over from World War 2 when there was a coastal battery built on the cliffs nearby. Another one, (blipped in 2011!) has recently been demolished. 

The huts would have been used to house the men who built the battery,  with its gun emplacements and observation tower. (It's since been repurposed as a holiday caravan site.) Comfortless quarters but useful later as storage for the farmers on whose land they were located. Not only that but some Nissen huts were re-purposed during the post-war years as makeshift dwellings for families who had lost their homes during wartime, bombed out of London and other cities. The huts were draughty and uncomfortable and didn't accommodate normal furniture - interesting memories here.

Rosebay willowherb aka fireweed evolved as an opportunistic plant that took hold on volcanic ash and lava fields and was therefore perfectly adapted to colonise  the bombsite rubble.
In late August 1946 it was reported from London that "these dreary spaces were for a brief time magnificently clothed in rosy purple".