Notea isn't here, but you get a hint as to where he is at. Just keep moving right until you reach a new screen. Once here, go down at the first opportunity and save when you reach the bottom. Head right and you'll find Notea here. Speak to him, then use slipstream fire to light the wood on the ground and then the torch above the door to the right. Once it opens, head right to enter yet another cave.
In here, keep heading right until you reach a rock. Gust it along with you, and now head down and to the left until you reach a pressure pad, which you should place the rock onto. Once the door opens, head left.
After a cutscene, head left and use slipstream fire to light the two unlit torches. When a chest appears, hold 
and gust upwards to open it. After another cutscene, head back to the right.
Keep heading right, and gust yourself into the mushrooms to bounce up until you can head left again. Move left until you can exit the cave. From here, go back to where Deo is.