Was messing around and found this... (Searched, no results)
I found out how to get underneath Scarlet Monastery, so thought I'd post this.
You'll only need some basic wallwalking skills.
Start in Tirisfal Glades at 81,29.
Then, climb up this small hill:
Now ride this way:
Now... you need to jump and land at the very top of the roof. Be sure to land on the right side of the fence (it's faster)
Now run towards the end...
Now jump down
Now jump down again!
And the final result:
Enjoy.