Southern Georgian Bay OPP and Midland Police are scanning a Provincial Park in Tiny Township.
On Monday night, Midland Police received a call that 26-year-old Eva Rozitis had not returned home.
OPP Officer Susan Jessop says they were contacted by Midland for assistance after her car was found in the parking lot of Awenda Provincial Park.
Jessop says they are concerned about the well-being of Rozitis as she is supposed to take medication daily.
Police are still trying to figure out why Rozitis had visited the park in the first place.
If you have any information on her whereabout or if you have seen Rozitis please call your local OPP detachment.