This is potentially the sort of imagery that could well represent the content of book on the cover. The approaching cliffs and gulls bring to light the tidal island of which the story is set. The dusk-like colours are pleasing to the eye and set an intriguing, mystical asthetic to the skies and surrounds of the isle conjuring from the sea.
~St Kilda (Scottish Gaelic: Hiort) is an isolated archipelago 64 kilometres (40 mi) west-northwest of North Uist in the North Atlantic Ocean. It contains the westernmost islands of the Outer Hebrides of Scotland~ - http://news.bbc.co.uk/local/highlandsandislands/hi/people_and_places/newsid_8949000/8949759.stm