Craft an image of an epic fantasy landscape at twilight, featuring a grand and imposing castle. The sky is a dramatic tapestry of reds, purples, and golds as the sun sets. The castle, built with dark stone, stands on a rugged mountain peak, with towers reaching towards the sky, each topped with a pointed roof and flying pennants. A dense, enchanted forest surrounds the mountain base, teeming with hidden magic. A cascading waterfall tumbles down from the castle's foundations into a crystalline lake below. The rest of the landscape includes rolling hills fading into the distance and a clear view of the castle's reflection in the still waters of the lake, all free from any characters or creatures.
