Hoarfrost

Winter's here. Inspired by: http://www.boredpanda.com/natural-winter-snow-ice-art/

Arctic portal

Somewhere, in the frozen north, odd things begin to happen to the ice-bound surface of a Siberian lake. The nine-day countdown begins as I pass the half-century.

Frozen cosmos

A conceptual vision of universal 'heat-death' - not, as I originally took it to mean, death by heat, rather the death of heat. Whole galaxies sit suspended for eternity in icy skeins, testament to an age that only was. Even entropy is spent.

The curious rime effect is obtained by use of a small filter radius (0.1) coupled with large master scale (100) and suitable gradient.