unkown leaf

unkown leaf

Observation - unkown leaf. Description: This is a very large (14x7 inches)deciduous leaf I have seen bigger leaves in the same location. Can anyone tell what it is, as none of my friends or family can.

This is a very large (14x7 inches)deciduous leaf I have seen bigger leaves in the same location. Can anyone tell what it is, as none of my friends or family can.