The latest Eruptions Word of the Day is "Tuya".
So, what is a tuya?
This is a tuya:
A tuya! Click on the image to see a larger version. Image by Erik Klemetti.
Alright, well, that doesn't entirely help, does it?
Lets look at the feature the arrow indicates. Some observations:
(1) It is low and broad.
(2) It has a relatively flat top.
(3) It is steep-sided.
(4) If you look real close, you can see crudely columnar jointing in the some of the outcrops near the top.
(5) If you had a piece of it in your hand, you'd know it was a volcano rock (andesite, very rarely you can find bits that are quite…
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