I dig out tiny caves, and store gold and silver in them.
I also build bridges of silver and make crowns of gold.
They are the smallest you could imagine.
Sooner or later everybody needs my help, yet many people are afraid to let me help them. Who am I?
What must be in the oven yet cannot be baked?
Grows in the heat yet shuns the light of day?
What sinks in water but rises with air?
Looks like skin, but is fine as hair?
Select a pack of riddles and try to solve it in an interesting way.
This riddle appears in the following downloadable PDF files: