Rayman 1: Part 12: Mr. Stone's Peaks (All Electoon Cages)

The "worlds" of The Pink Forest and Band Land have four levels to their names, while almost every world afterwards only have 3. Blue Mountains is one of them, and thus, Mr. Stone's Peaks is the final mountain level.

In the first area, you have to break open a boulder that contains a nearby musician's sitar. For helping him out. He gives you a potion for a Super Helicopter power. This upgrade's Rayman's Helicopter Hair from blonde gliding to full-on flight with blue and pink hair. You will need this power to fly through this whole area to reach the goal sign.

The Super Helicopter Hair only last for one area per usage, but you end up getting it again as soon as you start the second area. This time, you must use your powerful hair follicles to cut the ropes of a slate of rock that's slowly being dragged down by bigger rocks tied into the ropes into deep water, along with you with it!

The third area is where the climb towards Mr. Stone really gets going. Somehow more of that water appears to flood the mountains. Just keep going up when you need to!

The fourth area has you so high up the mountains that it gets snowy, and any snowy ground you touch will make you slide. So be careful where you let it take you and don't let it slide you off the stage! You'll find a Magician's Bonus here that takes advantage of this.
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The fifth area finally has you confront Mr. Stone, himself. He is completely invincible to your punch, so to hurt him, you must instead punch the big, goofy-faced ball that's tethered down to the middle Mr. Stone's place.

At first, you can use bouncing boulders to give yourself some extra height in order to reach the ball correctly. Mr. Stone will even hold some in his hand that you can punch out, though once his health gets low enough, you'll just have to rely on sudden clouds when he decides to run after you.

If you're REALLY good and don't mind taking some damage, you can try to jump on the boulders that he summons from the top and explode into piece when they hit the ground. Do what I did regarding that, but you need to have good reflexes. Regardless, keep bopping Mr. Stone with his own tether ball, and he'll eventually wear that as his new head.
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The sixth area is yet another Betilla visit. Her fifth and final one, actually, as she gives Rayman his final power of the game: RUNNING!

No, really. The last power is to run! If you gotta go fast, then after beating this level, you can! Combine this with his Helicopter Hair gliding, and Rayman can cover an insane amount of air distance! The only drawback to this is that Rayman will now have to permanently remove his Scary Face technique, meaning he'll no longer be able to spook those tall poachers in The Pink Forest's levels.
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I managed to get all of the Electoon cages in one go of this level, but before I move on, I'm gonna use all of the power I now have in this game to reach some of the remaining ones in previous levels, such as Twilight Gulch and Allegro Presto, among other things...