From the blog of Karen Alkalay-Gut:

Asher Green has been missing in Peru since Nov. 3rd. In his last email on the evening of the 3rd from the town of Chivay (near Arequipa) he said he’d be leaving the next day to trek in Colca Canyon for approximately a week, but hasn’t been heard from since and there is no trace of him.

Asher Green is travelling with an American passport, as well as an Israeli one. He speaks fluent American English and Hebrew. Some Spanish. He is around 175 cm, well built, green eyes, short light brown hair. He has a scar on his right cheek.

If you have seen Asher Green or know where he might be, please click on this link in order to contact his parents.