The Pit in the Starkmoor serves as a proving ground for conscripts. Those strong enough to withstand it join the army in Wulf's Cleft; those too weak are sent to dig in the mines.
'I see that the Dunlending squad did not provide much of a challenge for you. I should have expected as much. The next trial will be much more difficult.
'These three drakes are each from a different corner of lands far beyond our own. They send seasoned warriors running for the hills beyond these walls.
'I hope you have brought your friends. This battle will not be easy.'
The banner is on the arena floor at Avardin in the Starkmoor.
Use the banner to summon forth your first opponents, then defeat them.
Geralht is at the Culling Pit in Avardin.
Geralht will be pleased to discuss your victory.