Go to the monorail station and from there along the path towards the lake . Turn right by the second torch by the path. The Gnome will be standing on one of the rocks .
After shooting down the last one, run along the path until you reach a fork in the road . Turn right and behind the stone bridge - left .
On the right you will be passing old ruins . The Gnome is hanging on one of the stone arches .
Once you exit Reaver's mansion, go down the nearby stairs  and turn right. The Gnome is standing in the corner of the wall .
While going from the monorail station towards the lake, you will pass next to a wooden fence on the left and then the Bowerstone Market road sign . Turn right into the forest by the sign. This way you will reach the Dankwater Cave .
Go inside and run forward while paying close attention to the left side of the cave . After a few steps you should see a Gnome hanging from the wall .
A bit further, turn maximally to the right  and examine all the rocks. The next Gnome should be there .