If you go further south from the observatory, you will soon see a waterfall. If you follow the waterfall, you will see a small town, ホリキャンプ (sacred camp).

After talking to NPC in the cave, get off at the waterfall and enter the sacred camp, and then enter the human bone church under the town. After talking to the mercenaries in the church several times, you can open the door (it will be closed for your own meeting).

After opening the city gate, you can go back to get the chariot and continue southward from the Bone Hall. After coming out along the tunnel of Bones Church, you can reach the new town "Aipo at the north foot". When you first arrive in town, there will be a plot. A group of people gathered around the square to find out who stole the clock in the old town.