From the Ashina Castle Sculptor's Idol move towards the bridge
Head to the right of the bridge
Use your Grappling Hook to get over the gate & pass the large bridge in front of you
Head towards the back & use your Grappling Hook to go through the building
Open the door and enter to find a Sculptor's Idol (Abandoned Dungeon Entrance) to your left
1~5. This Path Leads Towards Getting Mortal Blade
After completing Ashina Castle, you have the choice to go into the Ashina Depths or the Senpou Temple, Mt. Kongo. It's recommended to follow the temple path as this leads towards retrieving the Mortal Blade - an important weapon needed to finish off undying foes.
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