Mt Bromo, Indonesia at sunrise, a time-lapse.
Alarm set for 3 am! The recommended layers of clothing, camera batteries charged, torch, breakfast, fully fuelled car. Well prepared but for one thing!
Guatemala has numerous volcanoes some of which are among the most active in the world, Lake Atitilan is surrounded by several.
Several of these fumaroles exist at the top of the volcano, spitting out smoke, steam, and sulphur which can be seen as a yellowish crust in the picture.