xAs you exit the clearing with the access point, turn left and keep going until you reach a fork. It's actually a crossroads — make a sharp, almost 180° turn right and you'll see another path between the trees.
Available after you defeat the machine, choose to spare the animals, and then leave and re-enter the area.
iWhen you're at the shopping center looking for the quest item, there are other unique (but otherwise useless) items strewn about. This quest is the only chance to get them in the game.
xGo to the small training ground near the eastern waterfall/stream. At the edge of the training ground is a stone pillar, and behind the tree root next to it is the chest.
xIn the eastern part of the area there are half-buried remnants of a set of stairs leading down towards the ravine. At about the midpoint, where they are buried completely, is a gap in the trees to the side, with the chest hidden among the roots.
xMake your way down the path at the southwest edge of the cliff and you will eventually reach a small hole in the cliff face with a machine standing next to it.
xFrom the southwest edge of the area, find a fallen pillar from which you can jump on top of a standing one, and then keep jumping from pillar to pillar towards the castle until you reach a ledge with the weapon chest on it.