The Thumb is a region and a peninsula of the U.S. state of Michigan, so named because the Lower Peninsula is shaped like a mitten. The Thumb area is generally considered to be in the Central Michigan region, east of the Tri-Cities and north of Metro Detroit. The region is also branded as the Blue Water Area.
A wind farm near Ubly
Detroit Edison's St. Clair Power Plant, once the largest in the world
The Pointe aux Barques Light, near the tip of the Thumb
Lighthouse at Port Sanilac on Lake Huron
Lower Peninsula of Michigan
The Lower Peninsula of Michigan – also known as Lower Michigan – is the larger, southern and less elevated of the two major landmasses that make up the U.S. state of Michigan; the other being the Upper Peninsula, which is separated by the Straits of Mackinac. It is surrounded by water on all sides except its southern border, which it shares with Indiana and Ohio. Although the Upper Peninsula is commonly referred to as "the U.P.", it is uncommon for the Lower Peninsula to be called "the L.P."
The Little Sable Point Light Station on Lake Michigan in Oceana County