I am the hidden land
Where man may not tread but wildlife can
Here a group in full did travel
By peak twilight, by horse and paddle
The group spoke sin and thus went in
To rule over all within
Where am I?
HINT 1
Man may not tread in this place but man is not the only species in this universe
HINT 2
This place is a place of great beauty and serenity
HINT 3
Man may only enter this place if invited in
Final Hint
A fellowship also visit this place at some point in their quest.