Answer:
A little pool with two layers of wall around it. One white and soft and the other dark and hard. Amidst a light brown grassy lawn with an outline of a green grass.
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.
When it comes in, From sea to shore, Twenty paces you'll see, No less, no more.
Of no use to one, Bliss to two. Men lie for it. The baby’s right,
Take one out and scratch my head, I am now black but once was red.
What is so fragile that saying its name breaks it?