Answer:
What kind of room doesn't have physical walls?
What can be measured but has no length, width or height?
What never asks questions but receives a lot of answers?
What goes up when rain comes down?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?