Here's some classic boiling mud. Apparently the mud is formed when acidic chemicals condense from the hot gases in vents. The acids then attack the surrounding rock forming the distinctive mud, along with the well known sulphide smell!
I usually write a blog post about once a week. The latest post can be viewed here: Sheeple: Are they succumbing to fake news, misinformation, and propaganda. (posted 2025-09-24 at 17:12:31). I do podcasts too!. You can listen to my latest podcast, here: OJB's Podcast 2029-09-09 Kiwi Values: From a practical perspective it has too many problems..