Quaking Hollow Favor/ Side Quest
This guide shows the complete walkthrough of the Quaking Hollow Favour/ Side Quest in God of War Ragnarok. The quest starts automatically as you reach the mystic gate in The Sinkholes at the location shown in the picture below. To reach the location, take the path going south after the long zipline.
Find the source of the tremors
As the quest starts, climb into the small tunnel behind the gateway as shown in the picture below. Use your spear to destroy the wall at the end of the path. Here you will see a dragon sitting on a pillar as shown in the second picture below. Destroy the pillar the dragon is sitting on with your spear. Then destroy the second pillar the dragon sits on. This will start The Burning Skies Favor.
After the dragon flies away, open the gate on the south side of the area by pulling the chain near it as shown in the picture below. Then jump to the other side.
Turn right and destroy the red vines as shown in the picture below. Also, destroy the poisonous plant inside. Then go inside through the hole in the wall and climb up the stairs.
After going up the stairs, burn the red vines up ahead. Then use the grappling hook to jump to the other side. Proceed ahead and jump down. Then crawl through the hole on the right side as shown in the second picture below. After coming out to the other side, defeat the Crag Jaw boss to complete the quest.