Round as an apple, deep as a cup, and all the kings' horses can't fill it up. What is it?

Round as an apple, deep as a cup, and all the kings' horses can't fill it up. What is it?

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What I am filled, I can point the way. When I am empty. Nothing moves me. I have two skins. One without and one within.

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Thousands lay up gold within this house. But no man made it. Spears past counting guard this house, but no man wards it.

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Riddle of the Day

Mar 17, 2026

If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?

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