I've seen a few posts stating that using apple maps would have taken him in the wrong direction initially. I don't have an apple phone but it's possible to use apple maps on a pc via the duckduckgo search engine. Recreating the suggested walking route produces this result:

[Image] 

You can see that it does head north at first and briefly re-joins the road (at Mirador La Cruz de Hilda) before taking another off road path further north and uphill. I believe it has been reported that Mirador La Cruz de Hilda is the starting point for the search today.