You'll need to find all seven shrines and activate them. Near the shrine is a small camp with campfire and a bed used by Mardo.
Go West to the main upper road coming from Ostian, then when you see a faint marker to your left, instead of following the main road up north keep going west.
Coordinates for Map marker: Wilderness -16, -19
- Mardo (trainer)
- 6 Aal (dead)
- 5 Sacks with food items
- Barrel with random low items
- Dry Schlingsträucher