Entry for the Illustration of the week activity at conceptart.org.
This is the briefing:
'Far into the mountains it lies. On a clear day you might catch a glimpse of it, near the top of the coldest peak.
Winter's keep. Its frozen spires stretching towards the pale sky. No one knows who raised it, only that they're long gone.
It's gates has been frozen shut for centuries and no smoke rises from it's chimneys.
But rumor has it, that on the coldest night of the year, when it is so cold that no one dares venture out, an eerie light can be seen patrolling it's battlements.'