Watch as two men base jump off Switzerland mountain into tiny plane

This video of two men base jumping into a tiny plane is equal parts terrifying and exhilarating — and contains enough numbers to cause a math-induced headache.

Red Bull is well-known for sponsoring some crazy stunts, but this might be the most wild one we’ve seen yet.

The video shows French wingsuit flyers Fred Fugen and Vince Reffet, known as the Soul Flyers, on their journey to jump from the top of the Jungfrau mountain in Switzerland — into a tiny, moving plane.

The men completed the daredevil stunt as part of their project A Door in the Sky. The pair spent several months training for the project by by completing more than 100 test flights in Spain.

Trust me — it’s just something you have to see to believe.

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