After dark

A sharp frost, a bright warm day, and a stunning sunset on the beach.
Encouraged by the response to some of my pictures at the camera club I was inspired to get out with the camera again, the first time in a while. 
And I had heard rumour of a new waterfall having appeared on the Long Strand, which revealed itself at low tide. 
I was looking to get a shot to enter in a competition entitled 'after dark' and think I may have it here.