A Logical Explanation
One Reddit user with the handle @tharchitect42 claimed that he was the mysterious figure in the image. He pointed out that he was wearing a gray dress shirt and dark jeans that day and had been frequenting the spot for two months.
Because of the leaves and the weather, the commenter was convinced that the photo was taken on the same day he went there to hike. Add to this; he maintained that this was how he imagined he would look from afar. As far as accessibility is concerned, the anonymous poster shared that there were roads that could be explored in Dundas Peak.