As soon as you are able to pass through, take your time and be careful as you try to jump on the small elevated platforms that are above a pool of acid - make your way to the lower left-hand side of the area and make your way back up to the next section which is also to your left.
Just like your first encounter at the Ancestral Mound, you'll need to use Vengeful Spirit to kill the beast. From the entrance, you'll want to head west where you'll encounter an Elder Baldur blocking your path. Here, you'll encounter a new type of leafy enemies and paths that are filled with pools of acid. Players will arrive at a heavily vegetated location called Greenpath.