The next threat came from the sky. During the crossing, they endured several snowstorms, two of which forced them to remain barricaded in the tent for three full days. For two days, the team managed to shelter behind a block of ice that partially mitigated the fury of the wind. However, the blizzard gave no respite and eventually buried them under a blanket of snow. "Digging out the tent was a delicate moment; the snow accumulated on the thin fabric was taking over the outline of the tent, and each shovelful was a relief to keep the shelter intact. In those moments, you question a lot of things."

Doubts were part of the polar landscape: would the fuel be sufficient, had they correctly calculated the calories needed for more than 40 days of march? None of this could be tested in advance, as it was not possible to import supplies from Spain. Nor were there any certainties regarding wildlife: according to Resolute Bay authorities, the region was particularly active in polar bears. A stretch of the Northwest Passage so remote that any rescue would be as long and complex as the crossing itself.

As if that weren't enough, several days were held under whiteoutdense fog without visual reference, without seeing the sun, without distinguishing the sky from the ground. Navigation became uncertain, and course errors racked up extra miles. "It was like skiing inside a white cloud, not knowing if you were going up, down or straight ahead."