When you arrive at the Sealed Grounds, there’s a short scene. Afterwards, head along the path and defeat the Deku Babas–swing your sword in the direction that matches their mouths. At the end of the path, drop down a ledge and watch the scene of the immense pit below you.
After this scene, go to the bottom of the pit, preferably using a combination of jumping off of a ledge and using the Sailcloth for a safe landing. Head to the pedestal and hit it with a Skyward Strike.
Doing so will remove the dark aura, which also triggers some air vents for easy upward travel. Use them and go towards the ledge you originally jump off of, then go towards the door nearby. Go on through to the Sealed Temple.
Head to the western side of the room, first, and save the game. Then go up the northern staircase and speak with the woman sitting nearby. You’ll be told to go to the Faron Woods to the east of here.
You’ll also learn how to place beacons and about beacons in general. When allowed, place a beacon on the X on the map. Exit the map and continue speaking with the woman.
Afterwards, go to the lower area, in the northeastern corner, and open the chest to not only receive a Bottle, but one filled with some Revitalizing Potion!
Use the Bird Statue again if you feel like, then leave through the door on the east side of the room.
Sealed Grounds (Again)
Upon exiting the Sealed Temple, look towards the north-northeast or so – you should see a blue light beaming from the ground. This is the beacon you placed, and it is near the entrance to the Faron Woods. The path here is actually quite linear, so remove it if you want to.
Afterwards, go forward along the path and drop off of the ledge to the lower area. Here, you’ll find Gorko the Goron surrounded by a few Bokoblins. Go to and defeat the Bokoblins, thereby rescuing Gorko.
Speak with Gorko to learn about the Bird Statue nearby, then approach it to activate it and others on the surface. Save, of course, when you regain control.
After doing so, look around for a vine-covered wall. When you find it, ascend the vines and go through the cave to the large pit. Push the log off of the ledge to create a shortcut back here, should you return (and you will).
Return to the log, then climb up it and the ledge. Go through the cave to the previous area. Here, go along the path for a bit. You’ll eventually come along another log. Push it up against the wall and climb it and the ledge. Go a bit further along the path to the Faron Woods.