Please do not forget to bring with you the same passport given to get the spots and the permits to enter to the trail. You must have the original passport to show it at the entrance of the trail.  Otherwise you won’t be able to enter, as the UGM won’t permit the entrance of hikers without passport. (Remember, it must be the same you gave to get the permits and the confirmation of the spots) In case you have a new passport, then bring with you the copy of the old passport and the new one. (Please bring both)