Answer:
What has feet on the inside but not on the outside?
You can break it or drink water from it.
What sphinxes employ and players enjoy.
I call the trees my home, yet I never go inside, and if I ever fall off the tree I will be surely be dead.
What age most travelers have?
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.