Pinhook Bog
| Pinhook Bog National Natural Landmark | |
|---|---|
| Location | LaPorte County, Indiana, United States |
| Nearest city | Michigan City, Indiana |
| Coordinates | 41°36′54″N 86°50′54″W / 41.61500°N 86.84833°W |
| Area | 25 acres (100,000 m2) |
| Governing body | National Park Service |
| Designated | 1965 |
Pinhook Bog is a unique bog in Indiana that has been designated a National Natural Landmark. It is part of Indiana Dunes National Park, an area that many citizens, scientists, and politicians fought hard to preserve. Its sister bog, Volo Bog (not to be confused with a bog of the same name in Illinois), is located nearby. The bog contains a large variety of plants, including insect eating plants, tamarack trees, stands of blueberry bushes, and floating mats of sphagnum moss. Pinhook Bog is about 580 acres (2.3 km2), a quarter of which is a floating mat of sphagnum peat moss. A "moat" separates the bog from the uplands.