what happened to?

a castle wide afar upper the cliff
my legs run faster as near i reach
the plain is green and rocks are spiky as if
the faster i get the easier harms get i will

long, far there is a castle upper the hill
why do i keep my feet in haste till?
is there a king siting the throne still?
or im just running faster to my heart fill?

what lies inside the castle upon the hill?
and what happened with the castle above the cliff?