unbelievable experience

Translations
невероятный опыт
Climbing that mountain was an unbelievable experience.
Подняться на ту гору было невероятным опытом.
Definitions
An event or situation that is so extraordinary, surprising, or impressive that it is difficult to accept or believe it actually happened.
Words
experience

noun
опыт
unbelievable

adjective
невероятный