| Hydrogen sulfide and steam belch from these fumaroles or solfataras located on the floor of Hawaii's Kilauea Caldera. |
| Surface geothermal manifestations include hot steaming ground, fumaroles, mud pools, and warm to boiling hot springs. |
| Other solfataras and fumaroles have produced a plethora of sulfates, and it is plausible that additional sulfates occur at El Desierto. |
| Realgar is most frequently encountered in epithermal hydrothermal settings such as shallow veins, hot springs, and fumaroles. |
| The banks on both sides of the river are marked by innumerable steam jets, ngawhas, fumaroles, and geysers. |
| It was preserved because of its amazing hot springs, fumaroles and geysers. |
