Stormy skies over Dolbadarn Castle at Llyn Padarn in Llanberis, Snowdonia, Wales.

The castle was built by Llywelyn ap Iorwerth in the 13th Century and is 40 feet tall and 40 feet in diameter, and guarded by walls 8 feet thick.

(FujiFilm X Pro 2, Fujinon XF18-55mm f/2.8-4 R LM OIS)