If you loved Everest: The Summit of the Gods, try Oblivion Island: Haruka and the Magic Mirror
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
You already loved

Everest: The Summit of the Gods
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Oblivion Island: Haruka and the Magic Mirror
What they share
Both films are directed by Shinsuke Sato, and they sit in Adventure territory. If that's the register that drew you to Everest: The Summit of the Gods, the second film will land in a comparable space — through a different lens.
What Oblivion Island: Haruka and the Magic Mirror is
Alice in Wonderland if Alice is hunting for her lost hand mirror. A teenaged girl chases a fox into a portal, arriving on an island built of forgotten childhood toys and treasures. The journey is more intriguing than the destination.