Breath of the Wild: Divine Beast Vah Medoh Quest

Divine Beast Vah Medoh is part of the Main Quest in LoZ:BotW

Divine Beast Vah Medoh is a Quest (Main Quest) in the game The Legend of Zelda: Breath of the Wild.

Make your way to the top level of the Rito Village.
Talk with Kaneli who will tell you to find and talk with Saki to learn where Teba has gone.
Go to the East from Kaneli to find the "house" with Saki.
Talking with her, she will tell you that Teba has gone to the Flight Range.
Link will get the memory, Revali's Flap before finishing his conversation with Saki.
If you have access to Sha Warvo Shrine, simply travel there and follow the road nearby it to the North to find the Flight Range.
Go to the one building there and look to the West, you will see Teba sitting on the landing working on a bow.
On the Northern side of this coop, you can find a Swallow Bow and 10 arrows.
Approach Teba. to trigger a cutscene.
Before he will take Link up to Divine Beast Vah Medoh, Link needs to prove his skill.
Teba will challenge Link to hit 5 targets in the Flight Range.
Jump off the landing and take off using the Paraglider.
While airborne during this trial, you will not need to worry about stamina too much. Whenever you redeploy the paraglider, your stamina will be refreshed.
Link just needs to break 5 targets while midair within 3 minutes.
When you succeed at this task, Teba will accept Link's help. He will offer you a chest with a inside it.

Screenshots

BreathoftheWildDivineBeastVahMedohQuest0.jpg
BreathoftheWildDivineBeastVahMedohQuest1.jpg

Dialogue

Kaneli: Ah, a visitor. Welcome to... Oh. OH! That object on your hip... Could it be... Forgive me. Where are my manners? I am Kaneli, elder of Rito Village. Now then... is that not a Sheikah Slate dangling from your hip?

Link: That's right.

Kaneli: Oh, my! So it is true! That means you must be a Champion like Master Revali - one of the few able to board Divine Beast Vah Medoh. No... What am I thinking? The Champions have all been dead for 100 years. This boy must be a mere descendant...an inheritor of the Sheikah Slate. Ah, forgive me... Champion descendant... if you would listen to this old man's request, you would have my eternal gratitude.

Link: I'll listen.

Kaneli: Thank you. Truly. Now that I know you have the blood of a Champion, there is something I must ask of you. How shall I put this... I would like you to deal with Divine Beast Vah Medoh. The giant beast circling above us. Only a chosen one, a Champion, can stop a Divine Beast. You must enter the beat and bend it to your will. I tried explaining this to the more headstrong Rito warriors, but they wouldn't listen to reason. Teba and Harth tried to confront Medoh, but it did not go well, and Harth was injured. teba escaped unscathed, but I fear he now plans to face Medoh alone. As a descendant of the Champions, perhaps you can help us. Please. Find Teba. If you work together, you may be able to stop Divine Beast Vah Medoh

Saki: Forgive my intrusion, but I overheard you speaking with the elder. It sounds like you intend to help my husband, Teba, in the fight against Medoh. But to tell the truth, there is not much I can do for you right now beyond telling you where my husband went.

Link: Where did he go?

Saki: Well... My husband headed to a place called the Flight Range. It's in Dronoc's Pass at the base of the Hebra Mountains. It's a place where Rito warriors prepare for aerial combat. I imagine he's gone there to gather weapons for another run at Medoh. As it happens, he made his way to the Flight Range on foot this time. If you take off from Revali's Landing, it's a straight shot down to the Flight Range. Revali's Landing is a memorial for the Rito Champion, Revali... So named in the hope that none might forget the events of that horrible day...

Revali: Impressive, I know. Very few cab achieve a mastery of the sky. Yet I have made an art of creating an updraft that allows me to soar. It's considered to be quite the masterpiece of aerial techniques, even among the Rito. With proper utilization of my superior skills, I see no reason why we couldn't easily dispense with Ganon. Now then, my ability to explore the firmament is certainly of note... But let's not - pardon me for being so blunt - let's not forget the fact I am the most skilled archer of all the Rito. Yet despite these truths, it seems that I have been tapped to merely assist you. All because you happen to have that little darkness-sealing sword on your back. I mean, it's just ... asinine. Unless... you think you can prove me wrong? Maybe we should just settle this one on one? But where...? Oh, I know! How about up there?! Oh, you must pardon me. I forgot you have no way of making it up to that Divine Beast on your own! Good luck sealing the darkness!

Saki: Descendant! Descendant! Are you all right? My apologies... I fear I have said far too much. If there is anything you do not understand, please do not hesitate to ask.

Teba: Yeah? I don't know you. And I'm actually pretty busy here. You should probably go.

Teba: ... Did you need something? I'm busy here.

Link: I can help you.

Teba: Help me? With what exactly?

Link: Vah Medoh...

Teba: Let me get this straight... Some random Hylian wants to help me bring down Divine Beast Vah Medoh? I'm not buying it. What's your name, stranger?

Link: I'm Link.

Teba: Link, huh? Well, Link. I'm Teba. But you already knew that. I'm guessing the elder asked you to come here and talk some sense into me. Am I right?

Link: That's right.

Teba: Just like the elder to trust any fool wandering into town. Look - you seem like an all-right guy, but let's make one thing clear: I'm not going anywhere. As a Rito warrior, I can't rest until my people are safe. There's only one way I'm going back to Rito Village.

Link: And that is...

Teba: Once Divine Beast Vah Medoh falls from the sky. I have to kill Medoh... so be it. Only then will I return to the village.

Link: Then let's get started.

Teba: Are you serious? HA! Well, far be it from me to talk you off the ledge. But it's as the elder said: the only way to stop Divine Beast Vah Medoh is to get inside it. Fat chance of that happening. There's nop way we can set foot on Medoh

Link: Actually...

Teba: So not only are you wingless... you're brainless too. Let me fill you in - the only people able to enter the Divine Beasts are the five Champions of old. And unfortunately for us and the rest of Hyrule, they all died a hundred years ago. If it hadn't been for Ganon... Never mind. Let's focus on bringing down Medoh... one step at a time. If we approach Medoh recklessly, its cannons will blast us out of the sky before we even get close... So I'm going to need to test you before I take you with me. We Rito warriors use the updraft in this ravine to hone our aerial archery skills. The updrafts are so strong here that a person could just open up a cloth over their head and float up easily. Now let's see what you're capable of. You'll have to maneuver through the air and destroy five of the targets set up in this valley in three minutes.

Link: I'm ready.

Teba: Then go destroy five targets with your arrows.

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Summary

Kaneli, elder of Rito Village, wants you to help a local soldier named Teba. You offered your assistance, but first you must find the soldier.

Teba's wife Saki may know where he is. Ask around Rito Village to gather more information.

You found Saki and asked where Teba went. It sounds like he headed for the Flight Range.

Search the Flight Range for Teba.

Teba won't let you anywhere near Divine Beast Vah Medoh unless you can at least hit the targets at the Flight Range.

If you catch an updraft with your paraglider, it'll carry you high into the sky. Use this technique to destroy five targets with arrows within the time limit to prove yourself to Teba.