The Veiled Path
Right after entering the location, turn right . You should see a Gnome hanging on the rock .
The second can be found by going straight towards the large gate. He will be sitting on a rock, beneath the Enigma entrance  .
The next Gnome is standing on a stone pillar, a few steps above  .
The last one can be found inside the Enigma, the ruins to which the entrance can found between the second and third Gnome . Once inside, shoot the yellow sphere above the stone gate with a ranged weapon .
On the other side a group of monsters will attack you. Kill them all and then use Fire Ball to light all the torches  and go through the second hole on the left. The Gnome can be found in the collapsed passage .