with sulphur crystals

描述：

Hydrogenobacter acidophilus (high-dro-jen-owe-back-ter ass-sid-off-ill-us) is found at some of the hottest regions, often above 60 degrees C. This image shows the filaments associated with crystalline deposits of sulphur. Material from Nymph Creek, a thermal site within Yellowstone Park, photograph by Kathy Sheehan and David Patterson.