Hidden Threat

The locals say they saw huge creatures near the fortress. There's an orcs' camp in the north, so that must have been mountain trolls. They say orcs often use them as siege weapons.
But what's worse, the Waterfolk are also employing something really big, and I overlooked that somehow. Their camp is in the east.
Please find that "something" before it attacks our fortress! And deal with the trolls while you're at it. We don't want to get showered with rocks at night, do we?

How is it going?

Amazing...
If they decided to storm us... we’d be in big trouble. It’s great you’ve dealt with them already.