I didn't take many photos because I was having too much fun riding to stop.
MONI has been there, but for those of you who haven't, the tunnel of trees is on M119 north of Harbor Springs, MI to Cross Village, MI. It actually extends on through Sturgeon Bay, and winds around to Mackinaw City, but the "tunnel" part generally refers to the stretch of road that is down to one lane. It is wide enough for two cars to pass, but just barely. Bike traveling in groups are well advised to remain in a single file. There are lots of fender benders because people (cager and biker alike) are looking at everything except for the road in front of them. The road began as animal paths that were followed by Native Americans whilst hunting. The animal paths became a foot path, which in turn became horse trails, then a two track for wagons, then a dirt road, eventually being paved by the state in the middle of the last century.
It is not a road for those in a hurry. Trees, in many places butt right up to the edge of the asphalt. There is no center line, and there is more than one curve that will having you making a 180 degree turn. If you stop for a photo, make sure you get your bike all the way off of the asphalt, because, while it may be out in the sticks, it is a tourist road, and sees 2000 cars per day in the slow season, and over 15,000 during peak seasons. If you're exceeding 55mph (posted limit on the straights is 45) you're gonna become part of the scenery.
I started, like most, in Harbor Springs. There are still a lot of boats in the bay, I was surprised.
Devils Elbow. Slow the hell down. Kinda scary meeting a cager coming the other way.
This is much of what you see (when the trees clear) of the west facing view. Just beyond the bike is a 50ft bluff. There are no guard rails.
The tree branches from either side meet one another over the road. Nearly the whole route is cool and shaded. You can skip the sunblock on this trip.