Marching eagerly from the tunnel the companions emerge into a windswept on the Eastern side of the mountains. Fresh air! And it is colder here than on the other side of the mountains too.
A bleak, squat tower looms on its northern end, crafted from the stark rock of the mountain itself in a style similar to that of the old keep of lake island. The tower's dark windows stare out over the jagged grey peaks and ridges which drop away to the south-east. If one were to go to the platform's edge where a low wall stands a better view of the landscape could perhaps be seen.
All the adventurers notice, perched on the battlements of the tower, a flock of peculiarly well-grown and sinister looking crows regarding them with bright, malicious eyes.
The pangs of hunger nick at the entrails of some party members. It is, after all, past lunchtime.

The party is congregated on the "a" on the map. The tunnel they came out of is the upper passage. The symbol on the top of the map are the tower's doors. The tower proper is just outside and above the picture.
Note: the PCs that were uncomfortable during the tunnel journey are feeling a bit cramped/sore at the moment.