A woman told police she was robbed by two companions while hiking at the new Stringer's Ridge Park in North Chattanooga.
Jack Douglas Brown, 19, of 4856 Lone Hill Road, and Brannan Moncier, 18, are facing charges of aggravated robbery.
Julie Ann Lowery said she was in a wooded area with the pair in the 1300 block of Spears Avenue when Brown suddenly pulled a knife from his pocket and held it to her throat. She said he demanded her cell phone and car keys.
She said Moncier then grabbed her purse from her shoulders and searched through it.
The pair then ran from the woods and left in her 2005 Mazda Tribute, police said.
She picked Brown and Moncier out of a police lineup.
Brown also has charges pending in Criminal Court, including several burglary and auto theft cases.