TheĀ Tunnel of TreesĀ on the breathtaking M-119 corridor is one of the most iconic color tours and fall destinations in the state of Michigan.Ā Before you head out (or return) to thisĀ must-see stop on your fall adventure,Ā read this for the inside scoop.Ā And just in case you need added incentive to visit, watch this video. It’s our new favorite.