You know, in case someone wants to prepare a walkthrough or something. I've only played up to preparing to leave the Grove towards the ruined Goblin-occupied village.
Outside of Silvanus' Grove, at one of the paths leading from the wrecked Mindflayer ship to the entrance to the Grove. This one has a free shovel next to it.
Outside of the ruined chapel.
Below the cliff where the Bugbear ambush in the grove takes place, near the lift. You might need to talk to the nearby squirrel and have them mention something about shinies on the floor, not sure.
Across the stone pillars near the Harpy Nest.