The exact cause of his death is unknown, but it is believed to have been a heart attack due to the harsh conditions he was enduring. He was found dead near his tent, and his body was buried under a snowdrift.
It is important to note that Wegener's theory of continental drift, which he proposed in 1912, was not widely accepted during his lifetime. He died a relatively unknown scientist, but his groundbreaking theory was eventually proven correct, and he is now considered one of the most important figures in the history of geology.