Answer:
Pregnant every time you see her, yet she never will give birth.
Golden treasure I contain, Guarded by hundreds and thousands. Stored in a labyrinth where no man walks, Yet men come often to seize my gold. By smoke I am overcome and robbed, then left to build my treasure anew
My first is in blood and also in battle. My second is in acorn, oak, and apple. My third and fourth are both the same. In the center of sorrow and twice in refrain. My fifth starts eternity ending here. My last is the first of last, Oh Dear.
If Mississippi should lend Missouri her New Jersey, what would Delaware?
So cold, damp and dark this place. To stay you would refrain, yet those who occupy this place do never complain.
People take me on walks and I run and have fun. What am I?