This place is located in another world accessible by the Fade, Nevermore, Portal, or being summoned by the spirit that lives here. Basically either your character has a connection to the supernatural and felt summoned here, they have been sent here via magic or they stumbled upon a portal.
The setting is an elven ruin in the middle of a dense forest, in early fall. This realm is on a parallel world and is not on earth. This place is located in another world accessible by the Fade, Nevermore, Portal, or being summoned by the spirit that lives here.
Basically either your character has a connection to the supernatural and felt summoned here, they have been sent here via magic or they stumbled upon a portal. To get to this world you would either need to be summoned by the spirits that lives here or be able to use an Eluvian.
From the time of the first sunrise to hit the soil the people of this world have been held captive. Each God took with them the followers they wished to serve them and as punishment for the rebellion on Earth. Families were separated, civilizations torn, communities were destroyed. At the creation of this world it was decreed that passage between Thrae and Earth was forbidden. None were allowed back the original plane of Earth. Yet there were some with the power and means to supersede the will of those wishing to keep the people prisoner. Those few Gods who still held love for the people devised one connection back to Earth through a very special realm.
The spirit who embodies the Hollow is one such being, pitying those locked within the corrupt and war ragged world of Thrae and thus created the Hollow and connected it to Earth, though the means by which one travels between the two remains unknown. The Hollow, once a land in a pocket of time and space separated from Thrae but still bound to it, now has been brought back to the present plane. It is now once more in Thrae. The dangers of this world await once more and now, except within the ruins themselves... no one is safe.