The Hollow Legion

The Hollow Legion

Mourningwood
Your next destination is Bowerstone. Before heading there, you should explore the area. Watch the video below to grab the Silver Key and to find another Gnome near the fort. There should be a dig spot near near the gnome, beside the dirt path.

Silver Key and Gnome

There's also a chest hidden in one of the uphill edifices left of the fort. Continue to the graveyard and follow the road. There's another edifice her that you can open. Behind it is a treasure chest. Continue along the path and your dog should be able to sniff another dig spot by the road.
 

Continue following the path and you'll eventually reach an abandoned war trench. There's a dig spot by the mound near the trench's entrance. Instead of following the golden trail and heading straight there, approach the gate. There's another dig spot that can be spotted nearby.

Passing the gate will allow you to unlock the Sunset House location. It is a bonus area that has a couple of Silver Keys, a demon door, a golden door, a gnome and a sidequest. You can visit this area later on if you want; however, I would strongly suggest that you clear this as you'll find some goodies you can keep as early as now. Refer to the Sidequests section for the dedicated walkthrough in Solving the house's mystery.

Mourningwood
Note: You can fast travel to the village already but if you don't mind a short hike, it will be good to explore the area a bit.

From the Sunset House gates, enter the trenches then turn to the right to find a treasure chest. Take the middle path then take the uphill path to the right to find a dig spot.

Follow the trail out of the trench. Your dog should detect another dig spot behind the trees and another one behind the boulders. Continue following the trail and you should find a chest behind a tree along the way. Walk a bit from that tree then look out for a Silver Key behind the ruin walls.

Hug the path to the right and you'll find a dirt road leading to the Demon Door. There's a dig spot there. On the main path past the Demon Door is a chest that should be immediately visible.

Upon reaching the village, check out the large tree with sandbags around it western side of the village. There's a chest in there. Check out the blocked tunnel entrance beside the one leading to Bowstone Industrial to find a chest there.

After getting the chest, there should be a familiar annoying voice resonating nearby. The gnome you're looking for is lying on the rocks.

Gnome

That's it for now so just head to Bowstone Industrial. Just follow the golden trail and it will lead you to Walter. Follow him.