In this mountain continue to make your way across to the top of the mountain. When you reach outside to the higher tier take the door to the right and follow the path to the otherside of the mountain and you will notice a mysterious figure jump back into hiding. Follow him and along the way pick up a TENT as well, then continue on and when you find a rope bridge the mysterious figure who looks like Shadow, but is not wanders off. There is a save point across the bridge so save your game and heal your wounds with a TENT if any. Then continue on to the outside of the mountain and you will have to walk a spiral like path and at the end there is someone blocking the entrance to the next cave. Its Vargus, the one who you heard about in town of South Figaro, but he attacks the party because he thought Sabin sent him. It was actually him that was shadowing the party earlier and the fight ensues.
After the battle the brothers are re-united once again, but Terra thought he was some bodybuilder strayed from the gym. Sabin laughs and takes it as a compliment. Edgar is heading towards the Sabil mountains, but Sabin had been watching from afar and it appears that Figaro will be the Empire's next target. Now that Sabin has joined the party he will provide some added power to the party. Now continue onto the next cave and inside pick up a TENT and continue on.