Blood pit

This location is accessible by going into the mines when you first started this game or by defeating torturer to unlock the gate in level 1 inner halls.

There may be chances of encountering lizardmen here and you can trigger a boss battle here by interacting with the pile of flesh.

Tips
If you do encounter lizardmen here,you can either engage a battle with it or play the safe route,by setting the bear trap if you have one,avoiding it completely by going into the mine which will eventually lead you to your next location or sneak pass it.If engaged in a battle,the easiest way to kill it is throwing explosive vial at it.If you don't have one,hack off the left arm that is holding the sword,then go for his tail and then the head immediately to lower your chances from it poisoning you or your party members.Expect some health loss due to his counter attacks.