Authorities are asking for the public's help in finding a missing woman who was last seen in Brewster County.

According to the Brewster County Sheriff's Office, Margaret Aislinn Channon was last seen at Big Bend National Park after arriving on February 11.

Friends say that Channon was supposed to visit SXSW in Austin, Texas and Mardi Gras in New Orleans, Louisiana.

She is described as 5'5'' and 135 lb with blue eyes and dark hair. She has tattoos on her leg, shoulder and left wrist.

Anyone with information on her whereabouts is asked to call her mother, Liz MacGahan, at (206) 422-9560, or the Montgomery County Police referencing case #190011464 at (240) 773-6700.