A fire is burning two miles northeast of Spud Rock in Saguaro National Park's Rincon Mountains.
The one acre fire was reported around 3:15 Wednesday afternoon.
According to InciWeb, the fire was started by lightning.
Firefighters are monitoring the fire, there are no closures at this time.
Backcountry visitors are encouraged to check with the Rincon Mountain Visitor Center for current conditions and potential trail closures.