Amateur photographer Martin Rietze has travelled the globe from the Arctic to Ethiopia capturing some of the planet's more other-worldly terrains.
Most people would think themselves unlucky if they passed a volcano as it erupted, but this counts as a good day at the office for one photographer.
Martin Rietze is part of a select group of volcano-chasers who seek out the exploding phenomena, and braves huge electric storms and boiling lava to get the perfect shots.
The 45-year-old travels around the world's volcano hotspots, from Costa Rica to Italy, in his pursuit of Earth's greatest fiery spectacle.
