Light Trickery
Some people insisted that it was just a trick of the light or an illusion caused by shadows possibly because of the melting ice. Someone else commented that there was a hidden trail that leads to that spot, which means it was probably a hiker.
A Logical Explanation
Another Reddit user claimed that they’d caused all the confusion. They claimed that they frequented Dundas Peak often and that they had been there the day the photograph was taken. Furthermore, they were wearing jeans and a grey sweater that day.