Battle at the bridge of skulls

[vikroth]

Quite near the beginning of the main questline i have to rendezvous with a host at the gorge, but that location doesnt show up on the map. ive made various sightseeing tours of the wall both at casle black and at eastwatch, but nothing is happening. is this a bug?
Also, moonbrothers OP, sneaking up on me the whole damn time

[Riven]

The bridge is east from black castle, pass shadow tower.
Yes, moonbrothers are very OP, since the very beginning they have groups of 212, for example, and even 37 people groups kill your team easily.