Geyser Basins & Thermal Features
There is a small parking area on the east side of the road where you can park and walk up the sidewalk to view Sulphur Caldron and other thermal pools of boiling sulfuric acid. Don't worry however, you will not risk being splashed or sprayed by these acidic pools because they are down below at a safe distance from the viewing point. Yellowstone's hotspot just below the ground heats water that rises through layers of the earth, bringing gases with it to the surface. Sulfur is one of these gases. The sulfur gas mixes with the boiling water at the surface creating sulfuric acid. Sulphur Caldron can be seen in conjunction with the Mud Volcano Self-Guiding Trail because they are just about right across the road from one another. |
