We have winners! Congratulations Jesper for finding Madame Zolcanohead for 5 points, followed right on his heels by George for 3 points, and Spike dragging-arse in at early-o’clock the next morning for 1 point.
I hope this wasn’t too easy. It can be difficult to figure out what would be a good clue but not give it away completely!
Ol Doinyo Lengai is one of the strangest and fascinating volcanoes I’ve ever seen. It is the only volcano that has erupted carbonatite lava in historical times, which, as mentioned in the clue, isn’t even hot enough to melt steel.
There are lots of good articles about it if you’d like to learn more:
Global volcanism Program’s entry on Ol Doinyo Lengai gives the basic overview
Here is the 2003 National Geographic article
This article on carbonatite is part of a blog all about the volcano.
Thanks for playing, it was fun!