Norris Geyser Basin in Yellowstone National Park. This place has the highest concentration of hydrothermal features in the world.
Thanks a lot to everyone who commented on my photos, or even stopped by for a visit. The comments have been pouring in pretty fast and I'm finding it increasingly difficult to reply to each individually. I'd rather spend that time in viewing others' photos and commenting there. But I do read each comment individually, and if you ask me something specific, I'll answer that.
RICOH , LTD. PENTAX K-1
28 mm (35mm equiv.)