In summer, tiny Lake Šobec, not much larger than an Olympic swimming pool, is a playground. It’s the main attraction at a popular camping site just outside Bled in mountainous northern Slovenia. Šobec’s shallow waters feature areas for swimming and kayaking, plus a modest water park. Ducks and swans share the shore with humans, while a variety of small fish tickle the toes of anyone splashing past them. When winter descends on the Alpine landscape, however, the small lake becomes a canvas. Amateur photographer Aleš Komovec used a drone to…