Requirements: To do this quest you will need 44 quest points, 49 Firemaking, 20 Crafting, and 20 Smithing. You will need a chisel, pickaxe, and tinderbox. See the guide below for details on acquiring a Sapphire Lantern, which is also required. If you haven't done Lost Tribe you will also need a rope and spiny helmet.
Recommendations: Level 49 Smithing and Crafting will allow you to create a bullseye lantern instead of buying one.
Map-
The Bullseye Lantern-
To do this quest you will need a lit Sapphire Lantern (Made from a Bullseye Lantern). You can buy a Bullseye Lantern from the Grand Exchange and add a Cut Sapphire, but make sure to buy one with a lens in it if you don’t have 49 crafting. You can swap lens types at any level, but it takes 49 Crafting to add the first one. If you get one without oil refer to the end of this paragraph. If you decide to make your Lantern instead you need a Frame. To make a Frame you need 49 Smithing, a Hammer, and a Steel Bar, just smith it on an anvil. Once you have the frame you will need to add a lens, for the purpose of this quest you can add a Cut Sapphire, it takes 49 Crafting to add a lens. After that, you will need to take some Swamp Tar to the Chemist in Rimmington and use it on his Lamp Oil Still, then use the Lantern on the still. After you have your Sapphire Lantern oiled up, use a tinderbox on it to light it, this requires 49 Firemaking.
Juna the Snake-
Once you have all the required items you will need to get to Juna the Snake. She is located deep in the Lumbridge Swamps. if you have have gotten far enough in the Lost Tribe quest you can head there from the Lumbridge Castle Cellar, otherwise you will need to head in from the Swamp entrance. The swamp entrance is by the South West corner of the swamp. If you have never been in through the Swamp entrance before you will need to use a rope on it, and if you take the Swamp entrance you will want to be wearing a Spiny Helmet if you don't want to get hurt by wall beasts. Also make sure not to bring any lanterns or candles besides your Sapphire Lantern, because they could cause a swamp gas explosion.
Light as a feather-
Follow the route shown on the guide map to arrive at Junas cave. Once there, head East and climb down the Rocks, then head a bit farther East to find Juna. Talk to her and agree to tell her a story, after you finish she will say you can enter the cave behind her. But first you need to make a bowl to collect the Tears of Guthix in. She will show you some rocks, which you must make the bowl out of, however there’s no way to walk to them. Climb back up the rocks to the west and use your Sapphire Lantern (Right click or you will extinguish it!) on one of the nearby Light creatures. It will carry you across the cave to the rocks. Mine one of the rocks, and then use your chisel on the Magic Stone you got to make a Stone Bowl. Now head East and climb down the Rocks then walk North to Juna, talk to her and the quest will be complete!
Rewards: 1 Quest Point 1,000 Crafting Experience Access to the Tears of Guthix mini game
