Ronan Lawlor started the W Circuit in Torres del Paine on Nov. 18 and has not been seen since. The 28-year-old chemical engineer from Ireland signed in when he entered the park, but never signed out. He has not contacted his family in over a month and has yet to return to a hostel in El Calafate, Argentina where he left his rucksack. The Irish embassy, local police and park rangers began an official search for Ronan today. If you have any information on his whereabouts, email firstname.lastname@example.org.