Pokemon Season 1 Episode 66 - Snow Way Out

⁣Ash and his friends are trapped in a snow storm. Brock suggests that the
group uses his Onix to create a bivouac. They're about to start when a
strong gust of wind blows Pikachu away, which cause Ash to go save
Pikachu. After saving Pikachu who is about to fall off a cliff, Ash
finds himself separated from the rest of the group.