a mangled propeller is about all that remains of a B-17 bomber that crashed by the Porcupine Mountains (Upper Peninsula of Michigan, the Yoop!)

On April 18th, 1944 the B-17 was on a training mission when it left Sioux City Iowa headed to Marquette. During the flight an engine caught fire and they were ordered to land in Duluth Minnesota for repairs. Unfortunately, the underpowered airplane was not going to make it. Fortunately, the crew bailed out and landed safely on the ground.

 The bomber crashed in the trees somewhere south of the Lake In The Clouds

The flight crew managed to walk to Silver City. At the time, the old boarded-up gift shop was a bar and the airmen waited there for their rescue. The military quickly came in and recovered the wreckage of the airplane especially the machine guns that were onboard. One of the propellers was left at the bar in Silver City as a reminder of the incident.

https://lostinmichigan.net/the-b-17-crash-in-the-porkies/