I go up, I go down.
15,000, I can be.
Under 20 I mostly am.


under the crust, bubbling and broiling. I give light to places sun cannot reach.

What am I?

  • 2
    $\begingroup$ This seems more like a definition than a riddle $\endgroup$
    – Amoz
    Commented Feb 16, 2022 at 0:41
  • 1
    $\begingroup$ I guess. But it is more of the definition of an unknown object, hence, kind of a riddle. $\endgroup$ Commented Feb 16, 2022 at 1:56

3 Answers 3


The answer:

lava lamp


In a lava lamp the wax goes up and down. The highest price a lava lamp sold is $15,000 The average lava lamp is under 20 dollars Lava is under the crust, and bubbling and broiling. A lamp gives light to places sun cannot reach.

Final Explanation:

So Lava + Lamp = Lava Lamp


I think the answer is


I go up, I go down

Temperatures go up and down

15 000 I can be, under 20 I mostly am

15 000 degrees is possible, but we humans are on average living under 20 degrees

Under the crust, bubbling and broiling

Temperatures makes things like lava bubble under the Earth's crust

I give light to places the sun cannot reach

When something becomes hot enough, it shines with a bright glow

  • $\begingroup$ Great logic, but that’s not it. Clue: it is a man made object and it is two different words. The two sentences in the clue about the name represent the two different words. $\endgroup$ Commented Feb 17, 2022 at 3:27
  • 1
    $\begingroup$ "15 000 I can be" is not possible. Not on Earth, not even here $\endgroup$
    – smci
    Commented Feb 17, 2022 at 7:32


The puzzle says under the crust it's bubbling and broiling.

  • 3
    $\begingroup$ Welcome to Puzzling! Feel free to take our tour. Your answer is a bit low quality, and it doesn't support all parts of the puzzle. Furthermore, this riddle has already been answered, feel free to check the other answers to that riddle to see what would be a good quality answer. $\endgroup$
    – Auribouros
    Commented Mar 17, 2022 at 15:37

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