Scouts have recently confirmed the presence of an opening leading into the Oldwalls at this location. The immediate area is likely dangerous, given the high risk of Bane infestation. The breach is not far from the site where the Unbroken Regent, Epistratos, famously clashed with Disfavored forces at the close of the war.
Points of interest
This is a straightforward area. The left-hand side of the breach has the Unbroken force under Gregos.
The center breach contains more bodies and the Banetouched Staff in a hidden container.
The other side has plenty of Wisps and more loot, including the Garn Torchkey. There's also a locked chest here, with a superior iron greataxe.