Fiborn Spur A/B - FS 3332A/3332B

Trail Overview

Federal Forest Service Road (FS) 3332A and 3332B, also known as Fiborn Spur A and Fiborn Spur B, are federally owned/ locally maintained, Level-2/ Level-3 forest roads with a surface composition of dirt, sand, gravel, grass, and native material. This route is currently open and in fair condition; it is not a DNR road (ORV use is subject to local government regulations). It is a timber loop off of FS 3332 - Fiborn Road that ventures into the Carp River and Taylor Creek marshland area. Description created on September 17, 2025.

Photos of Fiborn Spur A/B - FS 3332A/3332B

Want to see more?

Login

Difficulty

Dirt, gravel, sand, grass, and a rooted path, typically unmaintained after rain or snow, that may give rise to shallow water crossings and obstacles under 12 inches on the trail, including small ledges. This route is a narrow "Two-Track" that is one vehicle in width.

History

This trail is named after the Fiborn Karst preserve located 17 miles Northwest of this Spur (4 miles due north of the town of Caffey Corner). The Fiborn Karst Preserve is a 480-acre preserve that was once the site of a limestone quarry from 1905 to 1936 that supplied limestone to Algoma Steel in Sault Ste. Marie, Ontario. The Michigan Karst Conservancy purchased the property in 1987 and established the Fiborn Karst Preserve, managing it as a natural area open to the public under guidelines meant to prevent damage to natural features, vandalism, and unsupervised, unsafe cave exploration. MKC volunteers gather once a month from May through October to perform maintenance and management work such as clearing and mowing trails, posting or repairing signs, and occasionally cleaning graffiti in the quarry railroad house. At the preserve, there are two self-guided trails that offer visitors a look at the local geology and history of the area. A major feature of the preserve is the Hendrie River Water Cave, which is Michigan's longest known cave. It contains approximately 1,500 feet of high, narrow passages with a stream running along the floor. It should also be noted that both the Little Brown Bat and Northern Long-Eared Bat utilize the cave for swarming and hibernation. Visitors are able to tour this cave, and can schedule a tour directly through the Michigan Karst Conservancy.

Technical Rating

Fiborn Spur A/B - FS 3332A/3332B can be accessed by the following ride types:

• High-Clearance 4x4
• SUV
• SxS (60")
• ATV (50")
• Dirt Bike