Visit any thermal area in Yellowstone National Park and you are sure to come upon at least one surprise. No two geyser basins are alike. Some are shimmering, steaming blue alkaline springs such as Grand Prismatic (the largest hot spring in North America).
|Grand Prismatic Spring in Midway Geyser Basin|
Others are, well, stinky, migraine–inducing, violently churning cauldrons of boiling mud and sulfurous steam with a pH of 0.7. That’s battery acid strength, my friends.
Let me introduce you to Sulfur Cauldron, conveniently located a short stroll across the Park road from the Mud Volcano area, itself a hotbed of acidic, muddy sulfurous springs with a pH (the measure of acidity vs alkalinity) that would put lemon juice and vinegar to shame.
Inhale the invigorating sulfurous fumes of Yellowstone for as long as you are able, and try not to pass out!!!
|Sulfur Cauldron - but what is that innocuous–appearing hillside in the distance???|