The named croakers & Imps in  Scheol Lower, East from the orange head. Stay on the top of the edge. Dont jump down, dont use the bridge under the head. Follow the path to the east.

Or, from Ergo, go back south to the hiathlin and go full east until you are on the edge of the world. Jump in the void on a big surface. Before to jump you will see a portal brighting down there. Take it and you're appearing just on the croaker spot.