Meridian Spur A - FS 2421A

Trail Overview

Meridian Spur A FS 2421A is a gravel, leaning towards natural-improved, road within the Grassy Hollow Road area of the Potosi Unit of Mark Twain National Forest. The road begins as a fork in the Meridian FS 2421, where this turns southward, traversing slowly downhill over a slowly fading gravel road with small water collection holes, tight trees, and mild whoops on its track, all to end at a turnaround just shy of private property, riders should turn around and head back out the way they came.

Photos of Meridian Spur A - FS 2421A

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Difficulty

The FS 2421A is given a base rating of 2/10 for the water collection spots, surface mud, and small-time erosion, being just prominent enough for 4WD, otherwise watch for the normal gravel road complications of potholes, mounding, and wasboarding. The trail is not legally limited to just High Clearance 4WD, but it is advised that Full-Width 4WD avoid this trail.

History

An old 1958 topo map from Shirley, Missouri, and the surrounding area shows a north/south grid line crossing through the center of the FS 2421 and FS 2421A labeled as the "Fifth Principal Meridian", which is a land survey line that was created after the 1803 Louisiana Purchase, first being surveyed in 1815, and as of 2025 is still used as the official land survey line in 6 states, 4 of which are statewide, and 2 partially used. Thus the meaning behind the trail name Meridian. It only gets deeper with the FS 2420 being named Lost Meridian, using the nearby Lost Creek, adding even more influence from the surrounding Fifth Principal Meridian area to make that name unique yet similar.

Technical Rating