Another possible explanation of the mystery is an error in Big Pasang Bhote's observations about the colour of the suit, meaning the last climber could have been Karim, who was wearing a pure red down suit. If so, Confortola had indeed identified McDonnell's remains in the avalanche earlier. The existence of multiple plausible scenarios underscores the uncertainty, even among eyewitnesses, pertaining to the course of events on K2 that day.