Haunted place

This is a haunted place
remember to keep up pace;
for if you straggle,
for your life we cannot haggle
Quick! Look there! Pay attention!
There is a zombie yelling "Detention!"
Walk away slowly, toward it's hind:
For it is both deaf and blind.
Listen! Feel the ground.
That is a pale giant of 400, by pound.
Though you can hear her from miles away,
do not look at her, or you will pay.
Who makes these demons I do not know
I know who they serve and he is low.
From the largest giant to the smallest midge,
they all serve the dark god known as "Nollij"