Deep within these earthly passages await to be explored and you will be greeted by an Umber Hulk who was once the leader of the Orogs at one point or other but who has now met a sad fate. Sabblic-tan is slowly losing his grasp on the life he once had as the Umber Hulk and it's mind has begun to decay what little life he has remaining before becoming a full fledged beast. Listen to his story and listen well and learn of Krilag, the Orog Chieftain that has now replaced Sabblic-tan and who is holding the 1ST BADGE of six that your party will have to find.
You will need this and all six if you plan on facing the foul evil that is behind everything that has been happening within The Spine of the World, so search these caverns well and find this Krilag and his goons, lay them to rest and return to Sabblic-tan for more information and experience.
Besides Krilag and his Neo Orog men, there are also Ettins that occupy these lower tunnels and caverns which you shouldn't have too much trouble with as there are only a small handful that will bare your passage.
Your main goal here is to retrieve Krilag's Badge and be on your way to the Tomb of Terikan the Lich and of course, we will go through a step by step of how to get there next.